diff --git a/native_client/definitions.mk b/native_client/definitions.mk
index 7796da9d..4ed675b9 100644
--- a/native_client/definitions.mk
+++ b/native_client/definitions.mk
@@ -65,7 +65,8 @@ LDFLAGS_NEEDED := -Wl,--no-as-needed
 LDFLAGS_RPATH  := -Wl,-rpath,\$$ORIGIN
 endif
 ifeq ($(OS),Darwin)
-LDFLAGS_NEEDED :=
+CXXFLAGS       += -stdlib=libc++ -mmacosx-version-min=10.10
+LDFLAGS_NEEDED := -stdlib=libc++ -mmacosx-version-min=10.10
 LDFLAGS_RPATH  := -Wl,-rpath,@executable_path
 endif
 
diff --git a/native_client/javascript/binding.gyp b/native_client/javascript/binding.gyp
index d85dee28..789e4a91 100644
--- a/native_client/javascript/binding.gyp
+++ b/native_client/javascript/binding.gyp
@@ -8,6 +8,21 @@
       ],
       "include_dirs": [
         "../"
+      ],
+      "conditions": [
+        [ "OS=='mac'", {
+            "xcode_settings": {
+              "OTHER_CXXFLAGS": [
+                "-stdlib=libc++",
+                "-mmacosx-version-min=10.10"
+              ],
+              "OTHER_LDFLAGS": [
+                "-stdlib=libc++",
+                "-mmacosx-version-min=10.10"
+              ]
+            }
+          }
+        ]
       ]
     },
     {
diff --git a/taskcluster/darwin-amd64-cpu-opt.yml b/taskcluster/darwin-amd64-cpu-opt.yml
index 99ed3ea7..2426c7c9 100644
--- a/taskcluster/darwin-amd64-cpu-opt.yml
+++ b/taskcluster/darwin-amd64-cpu-opt.yml
@@ -6,8 +6,8 @@ build:
     - "index.project.deepspeech.deepspeech.native_client.osx.${event.head.sha}"
     - "notify.irc-channel.${notifications.irc}.on-exception"
     - "notify.irc-channel.${notifications.irc}.on-failed"
-  tensorflow: "https://index.taskcluster.net/v1/task/project.deepspeech.tensorflow.pip.r1.11.97d851f04e01696e51bc59b9bb4753fd22b3b25e.osx/artifacts/public/home.tar.xz"
-  summarize_graph: "https://index.taskcluster.net/v1/task/project.deepspeech.tensorflow.pip.r1.11.97d851f04e01696e51bc59b9bb4753fd22b3b25e.osx/artifacts/public/summarize_graph"
+  tensorflow: "https://index.taskcluster.net/v1/task/project.deepspeech.tensorflow.pip.r1.11.bee825492fcf830bd65a024bf859cbfc218e1473.osx/artifacts/public/home.tar.xz"
+  summarize_graph: "https://index.taskcluster.net/v1/task/project.deepspeech.tensorflow.pip.r1.11.bee825492fcf830bd65a024bf859cbfc218e1473.osx/artifacts/public/summarize_graph"
   scripts:
     build: "taskcluster/host-build.sh"
     package: "taskcluster/package.sh"
diff --git a/taskcluster/darwin-opt-base.tyml b/taskcluster/darwin-opt-base.tyml
index cd398974..5157302c 100644
--- a/taskcluster/darwin-opt-base.tyml
+++ b/taskcluster/darwin-opt-base.tyml
@@ -87,6 +87,7 @@ payload:
         export LC_ALL=C &&
         export PKG_CONFIG_PATH="$TASKCLUSTER_TASK_DIR/homebrew/lib/pkgconfig" &&
         export MACOSX_DEPLOYMENT_TARGET=10.10 &&
+        export HOMEBREW_NO_AUTO_UPDATE=1 &&
         env &&
         (wget -O - $TENSORFLOW_BUILD_ARTIFACT | pixz -d | gtar -C $TASKCLUSTER_TASK_DIR -xf - ) &&
         git clone --quiet ${event.head.repo.url} $TASKCLUSTER_TASK_DIR/DeepSpeech/ds/ &&
@@ -97,9 +98,10 @@ payload:
         ${swig.patch_nodejs.osx} &&
         $TASKCLUSTER_TASK_DIR/DeepSpeech/ds/${build.scripts.build} &&
         $TASKCLUSTER_TASK_DIR/DeepSpeech/ds/${build.scripts.package} ;
+        export TASKCLUSTER_TASK_EXIT_CODE=$? &&
         mv $TASKCLUSTER_TASK_DIR/homebrew/ $TASKCLUSTER_ORIG_TASKDIR/homebrew/ &&
         mv $TASKCLUSTER_TASK_DIR/homebrew.cache/ $TASKCLUSTER_ORIG_TASKDIR/homebrew.cache/ &&
-        cd $TASKCLUSTER_TASK_DIR/../ && rm -fr tc-workdir/
+        cd $TASKCLUSTER_TASK_DIR/../ && rm -fr tc-workdir/ && exit $TASKCLUSTER_TASK_EXIT_CODE
 
   artifacts:
     - type: "directory"
diff --git a/taskcluster/linux-amd64-cpu-opt.yml b/taskcluster/linux-amd64-cpu-opt.yml
index 794b0c4d..95c141a1 100644
--- a/taskcluster/linux-amd64-cpu-opt.yml
+++ b/taskcluster/linux-amd64-cpu-opt.yml
@@ -14,8 +14,8 @@ build:
   system_config:
     >
       ${swig.patch_nodejs.linux}
-  tensorflow: "https://index.taskcluster.net/v1/task/project.deepspeech.tensorflow.pip.r1.11.97d851f04e01696e51bc59b9bb4753fd22b3b25e.cpu/artifacts/public/home.tar.xz"
-  summarize_graph: "https://index.taskcluster.net/v1/task/project.deepspeech.tensorflow.pip.r1.11.97d851f04e01696e51bc59b9bb4753fd22b3b25e.cpu/artifacts/public/summarize_graph"
+  tensorflow: "https://index.taskcluster.net/v1/task/project.deepspeech.tensorflow.pip.r1.11.bee825492fcf830bd65a024bf859cbfc218e1473.cpu/artifacts/public/home.tar.xz"
+  summarize_graph: "https://index.taskcluster.net/v1/task/project.deepspeech.tensorflow.pip.r1.11.bee825492fcf830bd65a024bf859cbfc218e1473.cpu/artifacts/public/summarize_graph"
   scripts:
     build: "taskcluster/host-build.sh"
     package: "taskcluster/package.sh"
diff --git a/taskcluster/linux-amd64-ctc-opt.yml b/taskcluster/linux-amd64-ctc-opt.yml
index 04a337f2..535fcfbd 100644
--- a/taskcluster/linux-amd64-ctc-opt.yml
+++ b/taskcluster/linux-amd64-ctc-opt.yml
@@ -4,8 +4,8 @@ build:
     - "pull_request.synchronize"
     - "pull_request.reopened"
   template_file: linux-opt-base.tyml
-  tensorflow: "https://index.taskcluster.net/v1/task/project.deepspeech.tensorflow.pip.r1.11.97d851f04e01696e51bc59b9bb4753fd22b3b25e.cpu/artifacts/public/home.tar.xz"
-  summarize_graph: "https://index.taskcluster.net/v1/task/project.deepspeech.tensorflow.pip.r1.11.97d851f04e01696e51bc59b9bb4753fd22b3b25e.cpu/artifacts/public/summarize_graph"
+  tensorflow: "https://index.taskcluster.net/v1/task/project.deepspeech.tensorflow.pip.r1.11.bee825492fcf830bd65a024bf859cbfc218e1473.cpu/artifacts/public/home.tar.xz"
+  summarize_graph: "https://index.taskcluster.net/v1/task/project.deepspeech.tensorflow.pip.r1.11.bee825492fcf830bd65a024bf859cbfc218e1473.cpu/artifacts/public/summarize_graph"
   scripts:
     build: 'taskcluster/decoder-build.sh'
     package: 'taskcluster/decoder-package.sh'
diff --git a/taskcluster/linux-amd64-gpu-opt.yml b/taskcluster/linux-amd64-gpu-opt.yml
index 8b3e1f08..22ba8b2c 100644
--- a/taskcluster/linux-amd64-gpu-opt.yml
+++ b/taskcluster/linux-amd64-gpu-opt.yml
@@ -12,8 +12,8 @@ build:
   system_config:
     >
       ${swig.patch_nodejs.linux}
-  tensorflow: "https://index.taskcluster.net/v1/task/project.deepspeech.tensorflow.pip.r1.11.97d851f04e01696e51bc59b9bb4753fd22b3b25e.gpu/artifacts/public/home.tar.xz"
-  summarize_graph: "https://index.taskcluster.net/v1/task/project.deepspeech.tensorflow.pip.r1.11.97d851f04e01696e51bc59b9bb4753fd22b3b25e.gpu/artifacts/public/summarize_graph"
+  tensorflow: "https://index.taskcluster.net/v1/task/project.deepspeech.tensorflow.pip.r1.11.bee825492fcf830bd65a024bf859cbfc218e1473.gpu/artifacts/public/home.tar.xz"
+  summarize_graph: "https://index.taskcluster.net/v1/task/project.deepspeech.tensorflow.pip.r1.11.bee825492fcf830bd65a024bf859cbfc218e1473.gpu/artifacts/public/summarize_graph"
   maxRunTime: 14400
   scripts:
     build: "taskcluster/cuda-build.sh"
diff --git a/taskcluster/linux-arm64-cpu-opt.yml b/taskcluster/linux-arm64-cpu-opt.yml
index 9326f3ef..49d82bcc 100644
--- a/taskcluster/linux-arm64-cpu-opt.yml
+++ b/taskcluster/linux-arm64-cpu-opt.yml
@@ -4,8 +4,8 @@ build:
     - "index.project.deepspeech.deepspeech.native_client.${event.head.branchortag}.arm64"
     - "index.project.deepspeech.deepspeech.native_client.${event.head.branchortag}.${event.head.sha}.arm64"
     - "index.project.deepspeech.deepspeech.native_client.arm64.${event.head.sha}"
-  tensorflow: "https://index.taskcluster.net/v1/task/project.deepspeech.tensorflow.pip.r1.11.97d851f04e01696e51bc59b9bb4753fd22b3b25e.arm64/artifacts/public/home.tar.xz"
-  summarize_graph: "https://index.taskcluster.net/v1/task/project.deepspeech.tensorflow.pip.r1.11.97d851f04e01696e51bc59b9bb4753fd22b3b25e.cpu/artifacts/public/summarize_graph"
+  tensorflow: "https://index.taskcluster.net/v1/task/project.deepspeech.tensorflow.pip.r1.11.bee825492fcf830bd65a024bf859cbfc218e1473.arm64/artifacts/public/home.tar.xz"
+  summarize_graph: "https://index.taskcluster.net/v1/task/project.deepspeech.tensorflow.pip.r1.11.bee825492fcf830bd65a024bf859cbfc218e1473.cpu/artifacts/public/summarize_graph"
   ## multistrap 2.2.0-ubuntu1 is broken in 14.04: https://bugs.launchpad.net/ubuntu/+source/multistrap/+bug/1313787
   system_setup:
     >
diff --git a/taskcluster/linux-rpi3-cpu-opt.yml b/taskcluster/linux-rpi3-cpu-opt.yml
index 86998800..0c78780e 100644
--- a/taskcluster/linux-rpi3-cpu-opt.yml
+++ b/taskcluster/linux-rpi3-cpu-opt.yml
@@ -4,8 +4,8 @@ build:
     - "index.project.deepspeech.deepspeech.native_client.${event.head.branchortag}.arm"
     - "index.project.deepspeech.deepspeech.native_client.${event.head.branchortag}.${event.head.sha}.arm"
     - "index.project.deepspeech.deepspeech.native_client.arm.${event.head.sha}"
-  tensorflow: "https://index.taskcluster.net/v1/task/project.deepspeech.tensorflow.pip.r1.11.97d851f04e01696e51bc59b9bb4753fd22b3b25e.arm/artifacts/public/home.tar.xz"
-  summarize_graph: "https://index.taskcluster.net/v1/task/project.deepspeech.tensorflow.pip.r1.11.97d851f04e01696e51bc59b9bb4753fd22b3b25e.cpu/artifacts/public/summarize_graph"
+  tensorflow: "https://index.taskcluster.net/v1/task/project.deepspeech.tensorflow.pip.r1.11.bee825492fcf830bd65a024bf859cbfc218e1473.arm/artifacts/public/home.tar.xz"
+  summarize_graph: "https://index.taskcluster.net/v1/task/project.deepspeech.tensorflow.pip.r1.11.bee825492fcf830bd65a024bf859cbfc218e1473.cpu/artifacts/public/summarize_graph"
   ## multistrap 2.2.0-ubuntu1 is broken in 14.04: https://bugs.launchpad.net/ubuntu/+source/multistrap/+bug/1313787
   system_setup:
     >
diff --git a/taskcluster/node-package.yml b/taskcluster/node-package.yml
index f21709ff..d937bd41 100644
--- a/taskcluster/node-package.yml
+++ b/taskcluster/node-package.yml
@@ -16,8 +16,8 @@ build:
   system_config:
     >
       ${swig.patch_nodejs.linux}
-  tensorflow: "https://index.taskcluster.net/v1/task/project.deepspeech.tensorflow.pip.r1.11.97d851f04e01696e51bc59b9bb4753fd22b3b25e.cpu/artifacts/public/home.tar.xz"
-  summarize_graph: "https://index.taskcluster.net/v1/task/project.deepspeech.tensorflow.pip.r1.11.97d851f04e01696e51bc59b9bb4753fd22b3b25e.cpu/artifacts/public/summarize_graph"
+  tensorflow: "https://index.taskcluster.net/v1/task/project.deepspeech.tensorflow.pip.r1.11.bee825492fcf830bd65a024bf859cbfc218e1473.cpu/artifacts/public/home.tar.xz"
+  summarize_graph: "https://index.taskcluster.net/v1/task/project.deepspeech.tensorflow.pip.r1.11.bee825492fcf830bd65a024bf859cbfc218e1473.cpu/artifacts/public/summarize_graph"
   scripts:
     build: "taskcluster/node-build.sh"
     package: "taskcluster/node-package.sh"
diff --git a/taskcluster/test-armbian-opt-base.tyml b/taskcluster/test-armbian-opt-base.tyml
index 4feb0f3b..08b85c3d 100644
--- a/taskcluster/test-armbian-opt-base.tyml
+++ b/taskcluster/test-armbian-opt-base.tyml
@@ -44,7 +44,7 @@ then:
         PIP_DEFAULT_TIMEOUT: "60"
         PIP_EXTRA_INDEX_URL: "https://lissyx.github.io/deepspeech-python-wheels/"
         EXTRA_PYTHON_CONFIGURE_OPTS: "--with-fpectl" # Required by Debian Stretch
-        EXPECTED_TENSORFLOW_VERSION: "TensorFlow: v1.11.0-9-g97d851f"
+        EXPECTED_TENSORFLOW_VERSION: "TensorFlow: v1.11.0-11-gbee8254"
 
     command:
       - "/bin/bash"
diff --git a/taskcluster/test-darwin-opt-base.tyml b/taskcluster/test-darwin-opt-base.tyml
index 039f54bb..e889ad40 100644
--- a/taskcluster/test-darwin-opt-base.tyml
+++ b/taskcluster/test-darwin-opt-base.tyml
@@ -41,7 +41,7 @@ then:
         DEEPSPEECH_TEST_MODEL: https://queue.taskcluster.net/v1/task/${training}/artifacts/public/output_graph.pb
         DEEPSPEECH_PROD_MODEL: https://github.com/reuben/DeepSpeech/releases/download/v0.2.0-prod/output_graph.pb
         DEEPSPEECH_PROD_MODEL_MMAP: https://github.com/reuben/DeepSpeech/releases/download/v0.2.0-prod/output_graph.pbmm
-        EXPECTED_TENSORFLOW_VERSION: "TensorFlow: v1.11.0-9-g97d851f"
+        EXPECTED_TENSORFLOW_VERSION: "TensorFlow: v1.11.0-11-gbee8254"
 
     command:
       - - "/bin/bash"
@@ -59,6 +59,7 @@ then:
             export TASKCLUSTER_TMP_DIR="$TASKCLUSTER_TASK_DIR/tmp" &&
             export LC_ALL=C &&
             export MACOSX_DEPLOYMENT_TARGET=10.10 &&
+            export HOMEBREW_NO_AUTO_UPDATE=1 &&
             export PIP_DEFAULT_TIMEOUT=60 &&
             env &&
             git clone --quiet ${event.head.repo.url} $TASKCLUSTER_TASK_DIR/DeepSpeech/ds/ &&
@@ -66,9 +67,10 @@ then:
             cd $TASKCLUSTER_TASK_DIR &&
             source $TASKCLUSTER_TASK_DIR/DeepSpeech/ds/tc-brew-tests.sh && ${extraSystemSetup} &&
             /bin/bash ${build.args.tests_cmdline} ;
+            export TASKCLUSTER_TASK_EXIT_CODE=$? &&
             mv $TASKCLUSTER_TASK_DIR/homebrew/ $TASKCLUSTER_ORIG_TASKDIR/homebrew/ &&
             mv $TASKCLUSTER_TASK_DIR/homebrew.cache/ $TASKCLUSTER_ORIG_TASKDIR/homebrew.cache/ &&
-            cd $TASKCLUSTER_TASK_DIR/../ && rm -fr tc-workdir/
+            cd $TASKCLUSTER_TASK_DIR/../ && rm -fr tc-workdir/ && exit $TASKCLUSTER_TASK_EXIT_CODE
 
     mounts:
       - cacheName: deepspeech-homebrew-bin
diff --git a/taskcluster/test-linux-opt-base.tyml b/taskcluster/test-linux-opt-base.tyml
index 79a162bf..37c3cf85 100644
--- a/taskcluster/test-linux-opt-base.tyml
+++ b/taskcluster/test-linux-opt-base.tyml
@@ -44,7 +44,7 @@ then:
         DEEPSPEECH_PROD_MODEL: https://github.com/reuben/DeepSpeech/releases/download/v0.2.0-prod/output_graph.pb
         DEEPSPEECH_PROD_MODEL_MMAP: https://github.com/reuben/DeepSpeech/releases/download/v0.2.0-prod/output_graph.pbmm
         PIP_DEFAULT_TIMEOUT: "60"
-        EXPECTED_TENSORFLOW_VERSION: "TensorFlow: v1.11.0-9-g97d851f"
+        EXPECTED_TENSORFLOW_VERSION: "TensorFlow: v1.11.0-11-gbee8254"
 
     command:
       - "/bin/bash"
diff --git a/taskcluster/test-raspbian-opt-base.tyml b/taskcluster/test-raspbian-opt-base.tyml
index 71374453..f5d7484f 100644
--- a/taskcluster/test-raspbian-opt-base.tyml
+++ b/taskcluster/test-raspbian-opt-base.tyml
@@ -44,7 +44,7 @@ then:
         PIP_DEFAULT_TIMEOUT: "60"
         PIP_EXTRA_INDEX_URL: "https://www.piwheels.org/simple"
         EXTRA_PYTHON_CONFIGURE_OPTS: "--with-fpectl" # Required by Raspbian Stretch / PiWheels
-        EXPECTED_TENSORFLOW_VERSION: "TensorFlow: v1.11.0-9-g97d851f"
+        EXPECTED_TENSORFLOW_VERSION: "TensorFlow: v1.11.0-11-gbee8254"
 
     command:
       - "/bin/bash"
diff --git a/taskcluster/test-training_upstream-linux-amd64-py27mu-opt.yml b/taskcluster/test-training_upstream-linux-amd64-py27mu-opt.yml
index 8b910c5e..ef98a1e4 100644
--- a/taskcluster/test-training_upstream-linux-amd64-py27mu-opt.yml
+++ b/taskcluster/test-training_upstream-linux-amd64-py27mu-opt.yml
@@ -7,7 +7,7 @@ build:
       apt-get -qq -y install ${python.packages_trusty.apt}
   args:
     tests_cmdline: "${system.homedir.linux}/DeepSpeech/ds/tc-train-tests.sh 2.7.14:mu"
-  convert_graphdef: "https://index.taskcluster.net/v1/task/project.deepspeech.tensorflow.pip.r1.11.97d851f04e01696e51bc59b9bb4753fd22b3b25e.cpu/artifacts/public/convert_graphdef_memmapped_format"
+  convert_graphdef: "https://index.taskcluster.net/v1/task/project.deepspeech.tensorflow.pip.r1.11.bee825492fcf830bd65a024bf859cbfc218e1473.cpu/artifacts/public/convert_graphdef_memmapped_format"
   metadata:
     name: "DeepSpeech Linux AMD64 CPU upstream training Py2.7 mu"
     description: "Training a DeepSpeech LDC93S1 model for Linux/AMD64 using upstream TensorFlow Python 2.7 mu, CPU only, optimized version"
diff --git a/tc-brew-tests.sh b/tc-brew-tests.sh
index fa51d5cb..1a861da5 100644
--- a/tc-brew-tests.sh
+++ b/tc-brew-tests.sh
@@ -37,7 +37,7 @@ install_local_homebrew()
     mkdir -p "${LOCAL_HOMEBREW_DIRECTORY}"
     mkdir -p "${HOMEBREW_CACHE}"
 
-    curl -L https://github.com/Homebrew/brew/tarball/1.7.7 | tar xz --strip 1 -C "${LOCAL_HOMEBREW_DIRECTORY}"
+    curl -L https://github.com/Homebrew/brew/tarball/1.8.0 | tar xz --strip 1 -C "${LOCAL_HOMEBREW_DIRECTORY}"
     export PATH=${LOCAL_HOMEBREW_DIRECTORY}/bin:$PATH
 
     if [ ! -x "${LOCAL_HOMEBREW_DIRECTORY}/bin/brew" ]; then
diff --git a/tc-train-tests.sh b/tc-train-tests.sh
index 7ce7d054..b6de6d9c 100644
--- a/tc-train-tests.sh
+++ b/tc-train-tests.sh
@@ -62,12 +62,8 @@ fi;
 
 pushd ${HOME}/DeepSpeech/ds/
     time ./bin/run-tc-ldc93s1_new.sh 105
-    time ./bin/run-tc-ldc93s1_checkpoint.sh 105
 popd
 
-deactivate
-pyenv uninstall --force ${PYENV_NAME}
-
 cp /tmp/train/output_graph.pb ${TASKCLUSTER_ARTIFACTS}
 
 if [ ! -z "${CONVERT_GRAPHDEF_MEMMAPPED}" ]; then
@@ -77,3 +73,10 @@ if [ ! -z "${CONVERT_GRAPHDEF_MEMMAPPED}" ]; then
   /tmp/${convert_graphdef} --in_graph=/tmp/train/output_graph.pb --out_graph=/tmp/train/output_graph.pbmm
   cp /tmp/train/output_graph.pbmm ${TASKCLUSTER_ARTIFACTS}
 fi;
+
+pushd ${HOME}/DeepSpeech/ds/
+    time ./bin/run-tc-ldc93s1_checkpoint.sh 105
+popd
+
+deactivate
+pyenv uninstall --force ${PYENV_NAME}