diff --git a/.taskcluster.yml b/.taskcluster.yml
index 89e4ebbe..9ed80334 100644
--- a/.taskcluster.yml
+++ b/.taskcluster.yml
@@ -45,7 +45,7 @@ tasks:
         - "--login"
         - "-cxe"
         - >
-          echo "deb http://archive.ubuntu.com/ubuntu/ trusty-updates main" > /etc/apt/sources.list.d/trusty-updates.list &&
+          echo "deb http://archive.ubuntu.com/ubuntu/ xenial-updates main" > /etc/apt/sources.list.d/xenial-updates.list &&
           apt-get -qq update && apt-get -qq -y install git python3-pip curl sudo &&
           adduser --system --home /home/build-user build-user &&
           cd /home/build-user/ &&
diff --git a/native_client/BUILD b/native_client/BUILD
index 0798b82d..53711dc2 100644
--- a/native_client/BUILD
+++ b/native_client/BUILD
@@ -122,8 +122,8 @@ tf_cc_shared_object(
     linkopts = select({
         "//tensorflow:macos": [],
         "//tensorflow:linux_x86_64": LINUX_LINKOPTS,
-        "//tensorflow:rpi3": LINUX_LINKOPTS + ["-l:libstdc++.a"],
-        "//tensorflow:rpi3-armv8": LINUX_LINKOPTS + ["-l:libstdc++.a"],
+        "//tensorflow:rpi3": LINUX_LINKOPTS,
+        "//tensorflow:rpi3-armv8": LINUX_LINKOPTS,
         "//tensorflow:windows": [],
         "//conditions:default": [],
     }) + tflite_linkopts(),
diff --git a/native_client/definitions.mk b/native_client/definitions.mk
index 5ab84e7d..8d43ce0a 100644
--- a/native_client/definitions.mk
+++ b/native_client/definitions.mk
@@ -65,7 +65,7 @@ ifeq ($(TARGET),rpi3)
 TOOLCHAIN   ?= ${TFDIR}/bazel-$(shell basename "${TFDIR}")/external/LinaroArmGcc72/bin/arm-linux-gnueabihf-
 RASPBIAN    ?= $(abspath $(NC_DIR)/../multistrap-raspbian-buster)
 CFLAGS      := -march=armv7-a -mtune=cortex-a53 -mfpu=neon-fp-armv8 -mfloat-abi=hard -D_GLIBCXX_USE_CXX11_ABI=0 --sysroot $(RASPBIAN)
-CXXFLAGS    := $(CXXFLAGS)
+CXXFLAGS    := $(CFLAGS)
 LDFLAGS     := -Wl,-rpath-link,$(RASPBIAN)/lib/arm-linux-gnueabihf/ -Wl,-rpath-link,$(RASPBIAN)/usr/lib/arm-linux-gnueabihf/
 
 SOX_CFLAGS  := -I$(RASPBIAN)/usr/include
diff --git a/native_client/javascript/package.json.in b/native_client/javascript/package.json.in
index 66162508..42edc3c1 100644
--- a/native_client/javascript/package.json.in
+++ b/native_client/javascript/package.json.in
@@ -35,7 +35,7 @@
       "node-pre-gyp": "0.15.x",
       "argparse": "1.0.x",
       "sox-stream": "2.0.x",
-      "memory-stream": "0.0.3",
+      "memory-stream": "1.0.x",
       "node-wav": "0.0.2"
     },
     "devDependencies": {
diff --git a/taskcluster/.shared.yml b/taskcluster/.shared.yml
index d8c94a3e..6a212547 100644
--- a/taskcluster/.shared.yml
+++ b/taskcluster/.shared.yml
@@ -1,27 +1,27 @@
 python:
-  packages_trusty:
+  packages_xenial:
     apt: 'make build-essential libssl-dev zlib1g-dev libbz2-dev libreadline-dev libsqlite3-dev liblzma-dev curl llvm libncurses5-dev libncursesw5-dev xz-utils tk-dev libpng-dev libsox-dev libmagic-dev libgsm1-dev libltdl-dev'
   packages_buster:
     apt: 'python3-virtualenv python3-setuptools python3-pip python3-wheel python3-pkg-resources'
   packages_docs_bionic:
     apt: 'python3 python3-pip zip doxygen'
 training:
-  packages_trusty:
+  packages_xenial:
     apt: 'libopus0'
 tensorflow:
-  packages_trusty:
+  packages_xenial:
     apt: 'make build-essential gfortran git libblas-dev liblapack-dev libsox-dev libmagic-dev libgsm1-dev libltdl-dev libpng-dev python zlib1g-dev'
 java:
-  packages_trusty:
+  packages_xenial:
     apt: 'apt-get -qq -y install curl software-properties-common wget unzip && add-apt-repository --yes ppa:openjdk-r/ppa && apt-get -qq update && DEBIAN_FRONTEND=noninteractive apt-get -qq -y --force-yes install openjdk-8-jdk && java -version && update-ca-certificates -f'
 electronjs:
   packages_xenial:
     apt: 'libatk1.0-0 libatk-bridge2.0-0 libcairo2 libcups2 libdbus-1-3 libgdk-pixbuf2.0-0 libgtk-3-0 libnspr4 libnss3 libpango-1.0-0 libpangocairo-1.0-0 libx11-xcb1 libxcomposite1 libxcursor1 libxdamage1 libxfixes3 libxi6 libxrandr2 libxrender1 libxss1 libxtst6 xvfb'
 nodejs:
-  packages_trusty:
+  packages_xenial:
     apt: 'nodejs sox'
     apt_pinning: '(echo "Package: nodejs" && echo "Pin: origin deb.nodesource.com" && echo "Pin-Priority: 999") > /etc/apt/preferences'
-    prep_12: 'echo "deb http://deb.nodesource.com/node_12.x trusty main" > /etc/apt/sources.list.d/nodesource.list && wget -qO- https://deb.nodesource.com/gpgkey/nodesource.gpg.key | apt-key add -'
+    prep_12: 'echo "deb http://deb.nodesource.com/node_12.x xenial main" > /etc/apt/sources.list.d/nodesource.list && wget -qO- https://deb.nodesource.com/gpgkey/nodesource.gpg.key | apt-key add -'
   packages_xenial:
     apt: 'nodejs sox'
     apt_pinning: '(echo "Package: nodejs" && echo "Pin: origin deb.nodesource.com" && echo "Pin-Priority: 999") > /etc/apt/preferences'
diff --git a/taskcluster/android-cache-arm64-v8a-android-24.yml b/taskcluster/android-cache-arm64-v8a-android-24.yml
index 8fa8e927..260ea546 100644
--- a/taskcluster/android-cache-arm64-v8a-android-24.yml
+++ b/taskcluster/android-cache-arm64-v8a-android-24.yml
@@ -2,7 +2,7 @@ build:
   template_file: generic_tc_caching-linux-opt-base.tyml
   system_setup:
     >
-      ${java.packages_trusty.apt}
+      ${java.packages_xenial.apt}
   cache:
     artifact_url: ${system.android_cache.arm64_v8a.android_24.url}
     artifact_namespace: ${system.android_cache.arm64_v8a.android_24.namespace}
diff --git a/taskcluster/android-cache-arm64-v8a-android-25.yml b/taskcluster/android-cache-arm64-v8a-android-25.yml
index 36638726..34b8158b 100644
--- a/taskcluster/android-cache-arm64-v8a-android-25.yml
+++ b/taskcluster/android-cache-arm64-v8a-android-25.yml
@@ -2,7 +2,7 @@ build:
   template_file: generic_tc_caching-linux-opt-base.tyml
   system_setup:
     >
-      ${java.packages_trusty.apt}
+      ${java.packages_xenial.apt}
   cache:
     artifact_url: ${system.android_cache.arm64_v8a.android_25.url}
     artifact_namespace: ${system.android_cache.arm64_v8a.android_25.namespace}
diff --git a/taskcluster/android-cache-armeabi-v7a-android-24.yml b/taskcluster/android-cache-armeabi-v7a-android-24.yml
index 4c686739..441b9255 100644
--- a/taskcluster/android-cache-armeabi-v7a-android-24.yml
+++ b/taskcluster/android-cache-armeabi-v7a-android-24.yml
@@ -2,7 +2,7 @@ build:
   template_file: generic_tc_caching-linux-opt-base.tyml
   system_setup:
     >
-      ${java.packages_trusty.apt}
+      ${java.packages_xenial.apt}
   cache:
     artifact_url: ${system.android_cache.armeabi_v7a.android_24.url}
     artifact_namespace: ${system.android_cache.armeabi_v7a.android_24.namespace}
diff --git a/taskcluster/android-cache-armeabi-v7a-android-25.yml b/taskcluster/android-cache-armeabi-v7a-android-25.yml
index e4f78de7..620745a0 100644
--- a/taskcluster/android-cache-armeabi-v7a-android-25.yml
+++ b/taskcluster/android-cache-armeabi-v7a-android-25.yml
@@ -2,7 +2,7 @@ build:
   template_file: generic_tc_caching-linux-opt-base.tyml
   system_setup:
     >
-      ${java.packages_trusty.apt}
+      ${java.packages_xenial.apt}
   cache:
     artifact_url: ${system.android_cache.armeabi_v7a.android_25.url}
     artifact_namespace: ${system.android_cache.armeabi_v7a.android_25.namespace}
diff --git a/taskcluster/android-cache-sdk-android-27.yml b/taskcluster/android-cache-sdk-android-27.yml
index 668e142e..0b047dc1 100644
--- a/taskcluster/android-cache-sdk-android-27.yml
+++ b/taskcluster/android-cache-sdk-android-27.yml
@@ -2,7 +2,7 @@ build:
   template_file: generic_tc_caching-linux-opt-base.tyml
   system_setup:
     >
-      ${java.packages_trusty.apt}
+      ${java.packages_xenial.apt}
   cache:
     artifact_url: ${system.android_cache.sdk.android_27.url}
     artifact_namespace: ${system.android_cache.sdk.android_27.namespace}
diff --git a/taskcluster/android-cache-x86_64-android-24.yml b/taskcluster/android-cache-x86_64-android-24.yml
index ff06f551..c3b3ba1d 100644
--- a/taskcluster/android-cache-x86_64-android-24.yml
+++ b/taskcluster/android-cache-x86_64-android-24.yml
@@ -2,7 +2,7 @@ build:
   template_file: generic_tc_caching-linux-opt-base.tyml
   system_setup:
     >
-      ${java.packages_trusty.apt}
+      ${java.packages_xenial.apt}
   cache:
     artifact_url: ${system.android_cache.x86_64.android_24.url}
     artifact_namespace: ${system.android_cache.x86_64.android_24.namespace}
diff --git a/taskcluster/android-cache-x86_64-android-25.yml b/taskcluster/android-cache-x86_64-android-25.yml
index 8ccac4f9..a2e642e6 100644
--- a/taskcluster/android-cache-x86_64-android-25.yml
+++ b/taskcluster/android-cache-x86_64-android-25.yml
@@ -2,7 +2,7 @@ build:
   template_file: generic_tc_caching-linux-opt-base.tyml
   system_setup:
     >
-      ${java.packages_trusty.apt}
+      ${java.packages_xenial.apt}
   cache:
     artifact_url: ${system.android_cache.x86_64.android_25.url}
     artifact_namespace: ${system.android_cache.x86_64.android_25.namespace}
diff --git a/taskcluster/android-cache-x86_64-android-26.yml b/taskcluster/android-cache-x86_64-android-26.yml
index 0a74e78e..a8b9b15a 100644
--- a/taskcluster/android-cache-x86_64-android-26.yml
+++ b/taskcluster/android-cache-x86_64-android-26.yml
@@ -2,7 +2,7 @@ build:
   template_file: generic_tc_caching-linux-opt-base.tyml
   system_setup:
     >
-      ${java.packages_trusty.apt}
+      ${java.packages_xenial.apt}
   cache:
     artifact_url: ${system.android_cache.x86_64.android_26.url}
     artifact_namespace: ${system.android_cache.x86_64.android_26.namespace}
diff --git a/taskcluster/android-cache-x86_64-android-28.yml b/taskcluster/android-cache-x86_64-android-28.yml
index 4fa124fd..6193dd00 100644
--- a/taskcluster/android-cache-x86_64-android-28.yml
+++ b/taskcluster/android-cache-x86_64-android-28.yml
@@ -2,7 +2,7 @@ build:
   template_file: generic_tc_caching-linux-opt-base.tyml
   system_setup:
     >
-      ${java.packages_trusty.apt}
+      ${java.packages_xenial.apt}
   cache:
     artifact_url: ${system.android_cache.x86_64.android_28.url}
     artifact_namespace: ${system.android_cache.x86_64.android_28.namespace}
diff --git a/taskcluster/android-cache-x86_64-android-29.yml b/taskcluster/android-cache-x86_64-android-29.yml
index 57c194f2..63e1b3c6 100644
--- a/taskcluster/android-cache-x86_64-android-29.yml
+++ b/taskcluster/android-cache-x86_64-android-29.yml
@@ -2,7 +2,7 @@ build:
   template_file: generic_tc_caching-linux-opt-base.tyml
   system_setup:
     >
-      ${java.packages_trusty.apt}
+      ${java.packages_xenial.apt}
   cache:
     artifact_url: ${system.android_cache.x86_64.android_29.url}
     artifact_namespace: ${system.android_cache.x86_64.android_29.namespace}
diff --git a/taskcluster/android-cache-x86_64-android-30.yml b/taskcluster/android-cache-x86_64-android-30.yml
index 217459aa..51cf50b9 100644
--- a/taskcluster/android-cache-x86_64-android-30.yml
+++ b/taskcluster/android-cache-x86_64-android-30.yml
@@ -2,7 +2,7 @@ build:
   template_file: generic_tc_caching-linux-opt-base.tyml
   system_setup:
     >
-      ${java.packages_trusty.apt}
+      ${java.packages_xenial.apt}
   cache:
     artifact_url: ${system.android_cache.x86_64.android_30.url}
     artifact_namespace: ${system.android_cache.x86_64.android_30.namespace}
diff --git a/taskcluster/android-java-opt.yml b/taskcluster/android-java-opt.yml
index 268e6a52..5d4ec601 100644
--- a/taskcluster/android-java-opt.yml
+++ b/taskcluster/android-java-opt.yml
@@ -13,7 +13,7 @@ build:
     - "index.project.deepspeech.deepspeech.native_client.android-apk.${event.head.sha}"
   system_setup:
     >
-      ${java.packages_trusty.apt}
+      ${java.packages_xenial.apt}
   tensorflow: "https://community-tc.services.mozilla.com/api/index/v1/task/project.deepspeech.tensorflow.pip.r2.2.c29895fba1b9f9f48e2e54eefb024c69aa333473.android-armv7/artifacts/public/home.tar.xz"
   gradle_cache:
     url: ${system.gradle_cache.url}
diff --git a/taskcluster/generic_tc_caching-linux-opt-base.tyml b/taskcluster/generic_tc_caching-linux-opt-base.tyml
index 36668a0c..da91f115 100644
--- a/taskcluster/generic_tc_caching-linux-opt-base.tyml
+++ b/taskcluster/generic_tc_caching-linux-opt-base.tyml
@@ -25,7 +25,7 @@ payload:
         taskIndexExpire: { $fromNow: '6 months' }
       in: >
         (apt-get -qq -y remove --purge ubuntu-advantage-tools || true) &&
-        apt-get -qq update && apt-get -qq -y install curl git && ${extraSystemSetup};
+        apt-get -qq update && apt-get -qq -y install curl git sudo && ${extraSystemSetup};
         cache_artifact=`curl -sSIL -o /dev/null -w "%{http_code}" ${build.cache.artifact_url}` &&
         if [ "$cache_artifact" != "200" ]; then
           adduser --system --home ${system.homedir.linux} ${system.username} && cd ${system.homedir.linux}/ &&
diff --git a/taskcluster/gradle-cache.yml b/taskcluster/gradle-cache.yml
index ef589197..a77b2e19 100644
--- a/taskcluster/gradle-cache.yml
+++ b/taskcluster/gradle-cache.yml
@@ -5,7 +5,7 @@ build:
     artifact_namespace: ${system.gradle_cache.namespace}
   system_setup:
     >
-      ${java.packages_trusty.apt}
+      ${java.packages_xenial.apt}
   scripts:
     build: "taskcluster/gradle-build.sh"
     package: "taskcluster/gradle-package.sh"
diff --git a/taskcluster/linux-amd64-cpu-opt.yml b/taskcluster/linux-amd64-cpu-opt.yml
index db67d755..50f78a2d 100644
--- a/taskcluster/linux-amd64-cpu-opt.yml
+++ b/taskcluster/linux-amd64-cpu-opt.yml
@@ -10,7 +10,7 @@ build:
     - "index.project.deepspeech.deepspeech.native_client.cpu.${event.head.sha}"
   system_setup:
     >
-      ${nodejs.packages_trusty.prep_12} && ${nodejs.packages_trusty.apt_pinning}
+      ${nodejs.packages_xenial.prep_12} && ${nodejs.packages_xenial.apt_pinning}
       && apt-get -qq update && apt-get -qq -y install nodejs python-yaml
   tensorflow: "https://community-tc.services.mozilla.com/api/index/v1/task/project.deepspeech.tensorflow.pip.r2.2.c29895fba1b9f9f48e2e54eefb024c69aa333473.cpu/artifacts/public/home.tar.xz"
   scripts:
diff --git a/taskcluster/linux-amd64-ctc-opt.yml b/taskcluster/linux-amd64-ctc-opt.yml
index 5bedbb89..f0979261 100644
--- a/taskcluster/linux-amd64-ctc-opt.yml
+++ b/taskcluster/linux-amd64-ctc-opt.yml
@@ -10,7 +10,7 @@ build:
     - "index.project.deepspeech.deepspeech.native_client.cpu-ctc.${event.head.sha}"
   system_setup:
     >
-      ${nodejs.packages_trusty.prep_12} && ${nodejs.packages_trusty.apt_pinning}
+      ${nodejs.packages_xenial.prep_12} && ${nodejs.packages_xenial.apt_pinning}
       && apt-get -qq update && apt-get -qq -y install nodejs python-yaml
   tensorflow: "https://community-tc.services.mozilla.com/api/index/v1/task/project.deepspeech.tensorflow.pip.r2.2.c29895fba1b9f9f48e2e54eefb024c69aa333473.cpu/artifacts/public/home.tar.xz"
   scripts:
diff --git a/taskcluster/linux-amd64-gpu-opt.yml b/taskcluster/linux-amd64-gpu-opt.yml
index 96b00967..f34f2de0 100644
--- a/taskcluster/linux-amd64-gpu-opt.yml
+++ b/taskcluster/linux-amd64-gpu-opt.yml
@@ -10,7 +10,7 @@ build:
     - "index.project.deepspeech.deepspeech.native_client.gpu.${event.head.sha}"
   system_setup:
     >
-      ${nodejs.packages_trusty.prep_12} && ${nodejs.packages_trusty.apt_pinning}
+      ${nodejs.packages_xenial.prep_12} && ${nodejs.packages_xenial.apt_pinning}
       && apt-get -qq update && apt-get -qq -y install nodejs python-yaml
   tensorflow: "https://community-tc.services.mozilla.com/api/index/v1/task/project.deepspeech.tensorflow.pip.r2.2.c29895fba1b9f9f48e2e54eefb024c69aa333473.gpu/artifacts/public/home.tar.xz"
   maxRunTime: 14400
diff --git a/taskcluster/linux-amd64-tflite-opt.yml b/taskcluster/linux-amd64-tflite-opt.yml
index 6d0d7863..ffdb7499 100644
--- a/taskcluster/linux-amd64-tflite-opt.yml
+++ b/taskcluster/linux-amd64-tflite-opt.yml
@@ -10,7 +10,7 @@ build:
     - "index.project.deepspeech.deepspeech.native_client.tflite.${event.head.sha}"
   system_setup:
     >
-      ${nodejs.packages_trusty.prep_12} && ${nodejs.packages_trusty.apt_pinning}
+      ${nodejs.packages_xenial.prep_12} && ${nodejs.packages_xenial.apt_pinning}
       && apt-get -qq update && apt-get -qq -y install nodejs python-yaml
   tensorflow: "https://community-tc.services.mozilla.com/api/index/v1/task/project.deepspeech.tensorflow.pip.r2.2.c29895fba1b9f9f48e2e54eefb024c69aa333473.cpu/artifacts/public/home.tar.xz"
   scripts:
diff --git a/taskcluster/linux-arm64-cpu-opt.yml b/taskcluster/linux-arm64-cpu-opt.yml
index 776d8d30..aa4e2a34 100644
--- a/taskcluster/linux-arm64-cpu-opt.yml
+++ b/taskcluster/linux-arm64-cpu-opt.yml
@@ -14,7 +14,7 @@ build:
       apt-get -qq -y install gdebi git pixz &&
       wget http://mirrors.kernel.org/ubuntu/pool/universe/m/multistrap/multistrap_2.2.0ubuntu2_all.deb -O /tmp/multistrap_2.2.0ubuntu2_all.deb &&
       echo "y" | gdebi /tmp/multistrap_2.2.0ubuntu2_all.deb &&
-      ${nodejs.packages_trusty.prep_12} && ${nodejs.packages_trusty.apt_pinning}
+      ${nodejs.packages_xenial.prep_12} && ${nodejs.packages_xenial.apt_pinning}
       && apt-get -qq update && apt-get -qq -y install nodejs python-yaml
   system_config:
     >
diff --git a/taskcluster/linux-opt-base.tyml b/taskcluster/linux-opt-base.tyml
index 9cc0ccfe..f98d84a6 100644
--- a/taskcluster/linux-opt-base.tyml
+++ b/taskcluster/linux-opt-base.tyml
@@ -44,7 +44,7 @@ then:
           extraSystemConfig: { $eval: strip(str(build.system_config)) }
         in: >
           adduser --system --home ${system.homedir.linux} ${system.username} &&
-          apt-get -qq update && apt-get -qq -y install ${tensorflow.packages_trusty.apt} pixz pkg-config realpath sudo unzip wget zip && ${extraSystemSetup} &&
+          apt-get -qq update && apt-get -qq -y install ${tensorflow.packages_xenial.apt} pixz pkg-config realpath sudo unzip wget zip && ${extraSystemSetup} &&
           cd ${system.homedir.linux}/ &&
           echo -e "#!/bin/bash\nset -xe\n env && id && (wget -O - $TENSORFLOW_BUILD_ARTIFACT | pixz -d | tar -C ${system.homedir.linux}/ -xf - ) && git clone --quiet ${event.head.repo.url} ~/DeepSpeech/ds/ && cd ~/DeepSpeech/ds && git checkout --quiet ${event.head.sha} && ln -s ~/DeepSpeech/ds/native_client/ ~/DeepSpeech/tf/native_client && mkdir -p ${system.homedir.linux}/.cache/node-gyp/ && wget -O - ${system.node_gyp_cache.url} | tar -C ${system.homedir.linux}/.cache/node-gyp/ -xzf - && mkdir -p ${system.homedir.linux}/pyenv-root/ && wget -O - ${system.pyenv.linux.url} | tar -C ${system.homedir.linux}/pyenv-root/ -xzf - && if [ ! -z "${build.gradle_cache.url}" ]; then wget -O - ${build.gradle_cache.url} | tar -C ${system.homedir.linux}/ -xzf - ; fi && if [ ! -z "${build.android_cache.url}" ]; then wget -O - ${build.android_cache.url} | tar -C ${system.homedir.linux}/ -xzf - ; fi;" > /tmp/clone.sh && chmod +x /tmp/clone.sh &&
           sudo -H -u ${system.username} /bin/bash /tmp/clone.sh && ${extraSystemConfig} &&
diff --git a/taskcluster/linux-rpi3-cpu-opt.yml b/taskcluster/linux-rpi3-cpu-opt.yml
index cdce0bc0..82959259 100644
--- a/taskcluster/linux-rpi3-cpu-opt.yml
+++ b/taskcluster/linux-rpi3-cpu-opt.yml
@@ -14,7 +14,7 @@ build:
       apt-get -qq -y install gdebi git pixz &&
       wget http://mirrors.kernel.org/ubuntu/pool/universe/m/multistrap/multistrap_2.2.0ubuntu2_all.deb -O /tmp/multistrap_2.2.0ubuntu2_all.deb &&
       echo "y" | gdebi /tmp/multistrap_2.2.0ubuntu2_all.deb &&
-      ${nodejs.packages_trusty.prep_12} && ${nodejs.packages_trusty.apt_pinning}
+      ${nodejs.packages_xenial.prep_12} && ${nodejs.packages_xenial.apt_pinning}
       && apt-get -qq update && apt-get -qq -y install nodejs python-yaml
   system_config:
     >
diff --git a/taskcluster/node-package-cpu.yml b/taskcluster/node-package-cpu.yml
index 72870cd5..6769543b 100644
--- a/taskcluster/node-package-cpu.yml
+++ b/taskcluster/node-package-cpu.yml
@@ -8,7 +8,7 @@ build:
     - "win-amd64-cpu-opt"
   system_setup:
     >
-      ${nodejs.packages_trusty.prep_12} && ${nodejs.packages_trusty.apt_pinning}
+      ${nodejs.packages_xenial.prep_12} && ${nodejs.packages_xenial.apt_pinning}
       && apt-get -qq update && apt-get -qq -y install nodejs python-yaml
   scripts:
     build: "taskcluster/node-build.sh"
diff --git a/taskcluster/node-package-gpu.yml b/taskcluster/node-package-gpu.yml
index db48ae32..a430b4b1 100644
--- a/taskcluster/node-package-gpu.yml
+++ b/taskcluster/node-package-gpu.yml
@@ -5,7 +5,7 @@ build:
     - "win-amd64-gpu-opt"
   system_setup:
     >
-      ${nodejs.packages_trusty.prep_12} && ${nodejs.packages_trusty.apt_pinning}
+      ${nodejs.packages_xenial.prep_12} && ${nodejs.packages_xenial.apt_pinning}
       && apt-get -qq update && apt-get -qq -y install nodejs python-yaml
   scripts:
     build: "taskcluster/node-build.sh --cuda"
diff --git a/taskcluster/node-package-tflite.yml b/taskcluster/node-package-tflite.yml
index d49404d0..00338446 100644
--- a/taskcluster/node-package-tflite.yml
+++ b/taskcluster/node-package-tflite.yml
@@ -6,7 +6,7 @@ build:
     - "win-amd64-tflite-opt"
   system_setup:
     >
-      ${nodejs.packages_trusty.prep_12} && ${nodejs.packages_trusty.apt_pinning}
+      ${nodejs.packages_xenial.prep_12} && ${nodejs.packages_xenial.apt_pinning}
       && apt-get -qq update && apt-get -qq -y install nodejs python-yaml
   scripts:
     build: "taskcluster/node-build.sh --tflite"
diff --git a/taskcluster/pyenv-linux-amd64.yml b/taskcluster/pyenv-linux-amd64.yml
index a8ece0b4..4946e15b 100644
--- a/taskcluster/pyenv-linux-amd64.yml
+++ b/taskcluster/pyenv-linux-amd64.yml
@@ -5,7 +5,7 @@ build:
     artifact_namespace: "${system.pyenv.linux.namespace}"
   system_setup:
     >
-      apt-get -qq update && apt-get -qq -y install python-yaml ${python.packages_trusty.apt} wget
+      apt-get -qq update && apt-get -qq -y install python-yaml ${python.packages_xenial.apt} wget
   scripts:
     build: "taskcluster/pyenv-build.sh"
     package: "taskcluster/pyenv-package.sh"
diff --git a/taskcluster/swig-linux-amd64.yml b/taskcluster/swig-linux-amd64.yml
index 3b199c1a..2a127bbc 100644
--- a/taskcluster/swig-linux-amd64.yml
+++ b/taskcluster/swig-linux-amd64.yml
@@ -1,6 +1,6 @@
 build:
   template_file: generic_tc_caching-linux-opt-base.tyml
-  docker_image: "ubuntu:14.04"
+  docker_image: "ubuntu:16.04"
   build_or_cache:
     repo: "${system.swig.repo}"
     sha: "${system.swig.sha1}"
diff --git a/taskcluster/test-armbian-opt-base.tyml b/taskcluster/test-armbian-opt-base.tyml
index 7218e684..afe7b64b 100644
--- a/taskcluster/test-armbian-opt-base.tyml
+++ b/taskcluster/test-armbian-opt-base.tyml
@@ -19,7 +19,7 @@ then:
 
   payload:
     maxRunTime: { $eval: to_int(build.maxRunTime) }
-    image: "arm64v8/debian:buster-20190812"
+    image: "arm64v8/debian:buster-20200422"
 
     env:
       $let:
@@ -42,7 +42,7 @@ then:
       - $let:
           extraSystemSetup: { $eval: strip(str(build.system_setup)) }
         in: >
-          apt-get -qq update && apt-get -qq -y install curl python-simplejson git gnupg pixz sox sudo wget libatlas3-base libopenblas-base xxd && ${extraSystemSetup} &&
+          apt-get -qq update && apt-get -qq -y install curl python-simplejson git gnupg pixz sox sudo wget libatlas3-base libopenblas-base xxd && update-ca-certificates --fresh && ${extraSystemSetup} &&
           adduser --system --home ${system.homedir.linux} ${system.username} &&
           cd ${system.homedir.linux} &&
           echo -e "#!/bin/bash\nset -xe\n env && id && mkdir ~/DeepSpeech/ && git clone --quiet ${event.head.repo.url} ~/DeepSpeech/ds/ && cd ~/DeepSpeech/ds && git checkout --quiet ${event.head.sha}" > /tmp/clone.sh && chmod +x /tmp/clone.sh &&
diff --git a/taskcluster/test-augmentations-linux-amd64-py36m-opt.yml b/taskcluster/test-augmentations-linux-amd64-py36m-opt.yml
index 5dd066c2..8007cd6c 100644
--- a/taskcluster/test-augmentations-linux-amd64-py36m-opt.yml
+++ b/taskcluster/test-augmentations-linux-amd64-py36m-opt.yml
@@ -4,7 +4,7 @@ build:
     - "linux-amd64-ctc-opt"
   system_setup:
     >
-      apt-get -qq update && apt-get -qq -y install ${training.packages_trusty.apt}
+      apt-get -qq update && apt-get -qq -y install ${training.packages_xenial.apt}
   args:
     tests_cmdline: "${system.homedir.linux}/DeepSpeech/ds/taskcluster/tc-augmentation-tests.sh 3.6.10:m"
   metadata:
diff --git a/taskcluster/test-linux-opt-tag-base.tyml b/taskcluster/test-linux-opt-tag-base.tyml
index 1e6686b5..78c87625 100644
--- a/taskcluster/test-linux-opt-tag-base.tyml
+++ b/taskcluster/test-linux-opt-tag-base.tyml
@@ -44,7 +44,6 @@ then:
       - $let:
           extraSystemSetup: { $eval: strip(str(build.system_setup)) }
         in: >
-          ${aptEc2Mirrors} &&
           apt-get -qq update && apt-get -qq -y install curl python-simplejson git pixz sox sudo wget && ${extraSystemSetup} &&
           adduser --system --home ${system.homedir.linux} ${system.username} &&
           cd ${system.homedir.linux} &&
diff --git a/taskcluster/test-raspbian-opt-base.tyml b/taskcluster/test-raspbian-opt-base.tyml
index f3d2a5e5..2938b6b6 100644
--- a/taskcluster/test-raspbian-opt-base.tyml
+++ b/taskcluster/test-raspbian-opt-base.tyml
@@ -19,7 +19,7 @@ then:
 
   payload:
     maxRunTime: { $eval: to_int(build.maxRunTime) }
-    image: "resin/rpi-raspbian:buster-20190121"
+    image: "balenalib/rpi-raspbian:buster-20200429"
 
     env:
       $let:
@@ -42,7 +42,7 @@ then:
       - $let:
           extraSystemSetup: { $eval: strip(str(build.system_setup)) }
         in: >
-          apt-get -qq update && apt-get -qq -y install curl python-simplejson git pixz sox wget libatlas3-base xxd && ${extraSystemSetup} &&
+          apt-get -qq update && apt-get -qq -y install curl python-simplejson git pixz sox wget libatlas3-base xxd && update-ca-certificates --fresh && ${extraSystemSetup} &&
           adduser --system --home ${system.homedir.linux} ${system.username} &&
           cd ${system.homedir.linux} &&
           echo -e "#!/bin/bash\nset -xe\n env && id && mkdir ~/DeepSpeech/ && git clone --quiet ${event.head.repo.url} ~/DeepSpeech/ds/ && cd ~/DeepSpeech/ds && git checkout --quiet ${event.head.sha}" > /tmp/clone.sh && chmod +x /tmp/clone.sh &&
diff --git a/taskcluster/test-training-extra_16k-linux-amd64-py35m-opt.yml b/taskcluster/test-training-extra_16k-linux-amd64-py35m-opt.yml
index 6d19f491..3b1e1378 100644
--- a/taskcluster/test-training-extra_16k-linux-amd64-py35m-opt.yml
+++ b/taskcluster/test-training-extra_16k-linux-amd64-py35m-opt.yml
@@ -4,7 +4,7 @@ build:
     - "linux-amd64-ctc-opt"
   system_setup:
     >
-      apt-get -qq update && apt-get -qq -y install ${training.packages_trusty.apt}
+      apt-get -qq update && apt-get -qq -y install ${training.packages_xenial.apt}
   args:
     tests_cmdline: "${system.homedir.linux}/DeepSpeech/ds/taskcluster/tc-train-extra-tests.sh 3.5.8:m 16k"
   metadata:
diff --git a/taskcluster/test-training-extra_16k-linux-amd64-py36m-opt.yml b/taskcluster/test-training-extra_16k-linux-amd64-py36m-opt.yml
index e292a841..c75bc7a2 100644
--- a/taskcluster/test-training-extra_16k-linux-amd64-py36m-opt.yml
+++ b/taskcluster/test-training-extra_16k-linux-amd64-py36m-opt.yml
@@ -4,7 +4,7 @@ build:
     - "linux-amd64-ctc-opt"
   system_setup:
     >
-      apt-get -qq update && apt-get -qq -y install ${training.packages_trusty.apt}
+      apt-get -qq update && apt-get -qq -y install ${training.packages_xenial.apt}
   args:
     tests_cmdline: "${system.homedir.linux}/DeepSpeech/ds/taskcluster/tc-train-extra-tests.sh 3.6.10:m 16k"
   metadata:
diff --git a/taskcluster/test-training-extra_16k-linux-amd64-py37m-opt.yml b/taskcluster/test-training-extra_16k-linux-amd64-py37m-opt.yml
index a41f7cd4..79f9419d 100644
--- a/taskcluster/test-training-extra_16k-linux-amd64-py37m-opt.yml
+++ b/taskcluster/test-training-extra_16k-linux-amd64-py37m-opt.yml
@@ -4,7 +4,7 @@ build:
     - "linux-amd64-ctc-opt"
   system_setup:
     >
-      apt-get -qq update && apt-get -qq -y install ${training.packages_trusty.apt}
+      apt-get -qq update && apt-get -qq -y install ${training.packages_xenial.apt}
   args:
     tests_cmdline: "${system.homedir.linux}/DeepSpeech/ds/taskcluster/tc-train-extra-tests.sh 3.7.6:m 16k"
   metadata:
diff --git a/taskcluster/test-training-extra_8k-linux-amd64-py36m-opt.yml b/taskcluster/test-training-extra_8k-linux-amd64-py36m-opt.yml
index b79209ae..a5335c50 100644
--- a/taskcluster/test-training-extra_8k-linux-amd64-py36m-opt.yml
+++ b/taskcluster/test-training-extra_8k-linux-amd64-py36m-opt.yml
@@ -4,7 +4,7 @@ build:
     - "linux-amd64-ctc-opt"
   system_setup:
     >
-      apt-get -qq update && apt-get -qq -y install ${training.packages_trusty.apt}
+      apt-get -qq update && apt-get -qq -y install ${training.packages_xenial.apt}
   args:
     tests_cmdline: "${system.homedir.linux}/DeepSpeech/ds/taskcluster/tc-train-extra-tests.sh 3.6.10:m 8k"
   metadata:
diff --git a/taskcluster/test-training-extra_8k-linux-amd64-py37m-opt.yml b/taskcluster/test-training-extra_8k-linux-amd64-py37m-opt.yml
index ed5259bb..32edde28 100644
--- a/taskcluster/test-training-extra_8k-linux-amd64-py37m-opt.yml
+++ b/taskcluster/test-training-extra_8k-linux-amd64-py37m-opt.yml
@@ -4,7 +4,7 @@ build:
     - "linux-amd64-ctc-opt"
   system_setup:
     >
-      apt-get -qq update && apt-get -qq -y install ${training.packages_trusty.apt}
+      apt-get -qq update && apt-get -qq -y install ${training.packages_xenial.apt}
   args:
     tests_cmdline: "${system.homedir.linux}/DeepSpeech/ds/taskcluster/tc-train-extra-tests.sh 3.7.6:m 8k"
   metadata:
diff --git a/taskcluster/test-training-pypi_16k-linux-amd64-py35m-opt.yml b/taskcluster/test-training-pypi_16k-linux-amd64-py35m-opt.yml
index dc7f83d8..67a14191 100644
--- a/taskcluster/test-training-pypi_16k-linux-amd64-py35m-opt.yml
+++ b/taskcluster/test-training-pypi_16k-linux-amd64-py35m-opt.yml
@@ -7,7 +7,7 @@ build:
   ref_match: "refs/tags/"
   system_setup:
     >
-      apt-get -qq update && apt-get -qq -y install ${training.packages_trusty.apt}
+      apt-get -qq update && apt-get -qq -y install ${training.packages_xenial.apt}
   args:
     tests_cmdline: "${system.homedir.linux}/DeepSpeech/ds/taskcluster/tc-train-tests.sh 3.5.8:m 16k --pypi"
   metadata:
diff --git a/taskcluster/test-training-pypi_16k-linux-amd64-py36m-opt.yml b/taskcluster/test-training-pypi_16k-linux-amd64-py36m-opt.yml
index ffac9c89..f2909aa1 100644
--- a/taskcluster/test-training-pypi_16k-linux-amd64-py36m-opt.yml
+++ b/taskcluster/test-training-pypi_16k-linux-amd64-py36m-opt.yml
@@ -7,7 +7,7 @@ build:
   ref_match: "refs/tags/"
   system_setup:
     >
-      apt-get -qq update && apt-get -qq -y install ${training.packages_trusty.apt}
+      apt-get -qq update && apt-get -qq -y install ${training.packages_xenial.apt}
   args:
     tests_cmdline: "${system.homedir.linux}/DeepSpeech/ds/taskcluster/tc-train-tests.sh 3.6.10:m 16k --pypi"
   metadata:
diff --git a/taskcluster/test-training-pypi_16k-linux-amd64-py37m-opt.yml b/taskcluster/test-training-pypi_16k-linux-amd64-py37m-opt.yml
index a7624e73..c3b8282a 100644
--- a/taskcluster/test-training-pypi_16k-linux-amd64-py37m-opt.yml
+++ b/taskcluster/test-training-pypi_16k-linux-amd64-py37m-opt.yml
@@ -7,7 +7,7 @@ build:
   ref_match: "refs/tags/"
   system_setup:
     >
-      apt-get -qq update && apt-get -qq -y install ${training.packages_trusty.apt}
+      apt-get -qq update && apt-get -qq -y install ${training.packages_xenial.apt}
   args:
     tests_cmdline: "${system.homedir.linux}/DeepSpeech/ds/taskcluster/tc-train-tests.sh 3.7.6:m 16k --pypi"
   metadata:
diff --git a/taskcluster/test-training-pypi_8k-linux-amd64-py36m-opt.yml b/taskcluster/test-training-pypi_8k-linux-amd64-py36m-opt.yml
index 48c52ea1..78029d23 100644
--- a/taskcluster/test-training-pypi_8k-linux-amd64-py36m-opt.yml
+++ b/taskcluster/test-training-pypi_8k-linux-amd64-py36m-opt.yml
@@ -7,7 +7,7 @@ build:
   ref_match: "refs/tags/"
   system_setup:
     >
-      apt-get -qq update && apt-get -qq -y install ${training.packages_trusty.apt}
+      apt-get -qq update && apt-get -qq -y install ${training.packages_xenial.apt}
   args:
     tests_cmdline: "${system.homedir.linux}/DeepSpeech/ds/taskcluster/tc-train-tests.sh 3.6.10:m 8k --pypi"
   metadata:
diff --git a/taskcluster/test-training-pypi_8k-linux-amd64-py37m-opt.yml b/taskcluster/test-training-pypi_8k-linux-amd64-py37m-opt.yml
index 18f4d51f..c044a550 100644
--- a/taskcluster/test-training-pypi_8k-linux-amd64-py37m-opt.yml
+++ b/taskcluster/test-training-pypi_8k-linux-amd64-py37m-opt.yml
@@ -7,7 +7,7 @@ build:
   ref_match: "refs/tags/"
   system_setup:
     >
-      apt-get -qq update && apt-get -qq -y install ${training.packages_trusty.apt}
+      apt-get -qq update && apt-get -qq -y install ${training.packages_xenial.apt}
   args:
     tests_cmdline: "${system.homedir.linux}/DeepSpeech/ds/taskcluster/tc-train-tests.sh 3.7.6:m 8k  --pypi"
   metadata:
diff --git a/taskcluster/test-training-unittests_8k-linux-amd64-py35m-opt.yml b/taskcluster/test-training-unittests_8k-linux-amd64-py35m-opt.yml
index d33ad21d..3bd4c39d 100644
--- a/taskcluster/test-training-unittests_8k-linux-amd64-py35m-opt.yml
+++ b/taskcluster/test-training-unittests_8k-linux-amd64-py35m-opt.yml
@@ -4,7 +4,7 @@ build:
       - "linux-amd64-ctc-opt"
     system_setup:
       >
-        apt-get -qq update && apt-get -qq -y install ${training.packages_trusty.apt}
+        apt-get -qq update && apt-get -qq -y install ${training.packages_xenial.apt}
     args:
       tests_cmdline: "${system.homedir.linux}/DeepSpeech/ds/taskcluster/tc-train-unittests.sh 3.5.8:m"
     metadata:
diff --git a/taskcluster/test-training-unittests_8k-linux-amd64-py36m-opt.yml b/taskcluster/test-training-unittests_8k-linux-amd64-py36m-opt.yml
index 195ddfe9..a4949830 100644
--- a/taskcluster/test-training-unittests_8k-linux-amd64-py36m-opt.yml
+++ b/taskcluster/test-training-unittests_8k-linux-amd64-py36m-opt.yml
@@ -4,10 +4,10 @@ build:
       - "linux-amd64-ctc-opt"
     system_setup:
       >
-        apt-get -qq update && apt-get -qq -y install ${training.packages_trusty.apt}
+        apt-get -qq update && apt-get -qq -y install ${training.packages_xenial.apt}
     args:
       tests_cmdline: "${system.homedir.linux}/DeepSpeech/ds/taskcluster/tc-train-unittests.sh 3.6.10:m"
     metadata:
       name: "DeepSpeech on Linux AMD64 CPU training unittests using Python 3.6"
       description: "Training unittests DeepSpeech LDC93S1 model for Linux/AMD64 using Python 3.6, for CPU only, and optimized version"
- 
\ No newline at end of file
+ 
diff --git a/taskcluster/test-training-unittests_8k-linux-amd64-py37m-opt.yml b/taskcluster/test-training-unittests_8k-linux-amd64-py37m-opt.yml
index 1f9aabc3..5b9ff7a5 100644
--- a/taskcluster/test-training-unittests_8k-linux-amd64-py37m-opt.yml
+++ b/taskcluster/test-training-unittests_8k-linux-amd64-py37m-opt.yml
@@ -4,7 +4,7 @@ build:
       - "linux-amd64-ctc-opt"
     system_setup:
       >
-        apt-get -qq update && apt-get -qq -y install ${training.packages_trusty.apt}
+        apt-get -qq update && apt-get -qq -y install ${training.packages_xenial.apt}
     args:
       tests_cmdline: "${system.homedir.linux}/DeepSpeech/ds/taskcluster/tc-train-unittests.sh 3.7.6:m"
     metadata:
diff --git a/taskcluster/test-training_16k-linux-amd64-py35m-opt.yml b/taskcluster/test-training_16k-linux-amd64-py35m-opt.yml
index 48c25019..5e5e2f0a 100644
--- a/taskcluster/test-training_16k-linux-amd64-py35m-opt.yml
+++ b/taskcluster/test-training_16k-linux-amd64-py35m-opt.yml
@@ -4,7 +4,7 @@ build:
     - "linux-amd64-ctc-opt"
   system_setup:
     >
-      apt-get -qq update && apt-get -qq -y install ${training.packages_trusty.apt}
+      apt-get -qq update && apt-get -qq -y install ${training.packages_xenial.apt}
   args:
     tests_cmdline: "${system.homedir.linux}/DeepSpeech/ds/taskcluster/tc-train-tests.sh 3.5.8:m 16k"
   metadata:
diff --git a/taskcluster/test-training_16k-linux-amd64-py36m-opt.yml b/taskcluster/test-training_16k-linux-amd64-py36m-opt.yml
index 1d4eaa98..7f19771d 100644
--- a/taskcluster/test-training_16k-linux-amd64-py36m-opt.yml
+++ b/taskcluster/test-training_16k-linux-amd64-py36m-opt.yml
@@ -4,7 +4,7 @@ build:
     - "linux-amd64-ctc-opt"
   system_setup:
     >
-      apt-get -qq update && apt-get -qq -y install ${training.packages_trusty.apt}
+      apt-get -qq update && apt-get -qq -y install ${training.packages_xenial.apt}
   args:
     tests_cmdline: "${system.homedir.linux}/DeepSpeech/ds/taskcluster/tc-train-tests.sh 3.6.10:m 16k"
   metadata:
diff --git a/taskcluster/test-training_16k-linux-amd64-py37m-opt.yml b/taskcluster/test-training_16k-linux-amd64-py37m-opt.yml
index 25a35efa..4146dfca 100644
--- a/taskcluster/test-training_16k-linux-amd64-py37m-opt.yml
+++ b/taskcluster/test-training_16k-linux-amd64-py37m-opt.yml
@@ -4,7 +4,7 @@ build:
     - "linux-amd64-ctc-opt"
   system_setup:
     >
-      apt-get -qq update && apt-get -qq -y install ${training.packages_trusty.apt}
+      apt-get -qq update && apt-get -qq -y install ${training.packages_xenial.apt}
   args:
     tests_cmdline: "${system.homedir.linux}/DeepSpeech/ds/taskcluster/tc-train-tests.sh 3.7.6:m 16k"
   metadata:
diff --git a/taskcluster/test-training_8k-linux-amd64-py36m-opt.yml b/taskcluster/test-training_8k-linux-amd64-py36m-opt.yml
index b9396fdd..560ffcfb 100644
--- a/taskcluster/test-training_8k-linux-amd64-py36m-opt.yml
+++ b/taskcluster/test-training_8k-linux-amd64-py36m-opt.yml
@@ -4,7 +4,7 @@ build:
     - "linux-amd64-ctc-opt"
   system_setup:
     >
-      apt-get -qq update && apt-get -qq -y install ${training.packages_trusty.apt}
+      apt-get -qq update && apt-get -qq -y install ${training.packages_xenial.apt}
   args:
     tests_cmdline: "${system.homedir.linux}/DeepSpeech/ds/taskcluster/tc-train-tests.sh 3.6.10:m 8k"
   metadata:
diff --git a/taskcluster/test-training_8k-linux-amd64-py37m-opt.yml b/taskcluster/test-training_8k-linux-amd64-py37m-opt.yml
index eb7cb1be..09bfd129 100644
--- a/taskcluster/test-training_8k-linux-amd64-py37m-opt.yml
+++ b/taskcluster/test-training_8k-linux-amd64-py37m-opt.yml
@@ -4,7 +4,7 @@ build:
     - "linux-amd64-ctc-opt"
   system_setup:
     >
-      apt-get -qq update && apt-get -qq -y install ${training.packages_trusty.apt}
+      apt-get -qq update && apt-get -qq -y install ${training.packages_xenial.apt}
   args:
     tests_cmdline: "${system.homedir.linux}/DeepSpeech/ds/taskcluster/tc-train-tests.sh 3.7.6:m 8k"
   metadata: