diff --git a/native_client/definitions.mk b/native_client/definitions.mk
index 4846ed11..e5fd0ae5 100644
--- a/native_client/definitions.mk
+++ b/native_client/definitions.mk
@@ -127,7 +127,7 @@ SOX_LDFLAGS := $(RASPBIAN)/usr/lib/aarch64-linux-gnu/libsox.so
 PYVER := $(shell python -c "import platform; maj, min, _ = platform.python_version_tuple(); print(maj+'.'+min);")
 PYTHON_PACKAGES      :=
 PYTHON_PATH          := PYTHONPATH=$(RASPBIAN)/usr/lib/python$(PYVER)/:$(RASPBIAN)/usr/lib/python3/dist-packages/
-PYTHON_SYSCONFIGDATA := _PYTHON_SYSCONFIGDATA_NAME=_sysconfigdata_m_linux_aarch64-linux-gnu
+PYTHON_SYSCONFIGDATA := _PYTHON_SYSCONFIGDATA_NAME=_sysconfigdata__linux_aarch64-linux-gnu
 NUMPY_INCLUDE        := NUMPY_INCLUDE=$(RASPBIAN)/usr/include/python3.9/
 PYTHON_PLATFORM_NAME := --plat-name linux_aarch64
 NODE_PLATFORM_TARGET := --target_arch=arm64 --target_platform=linux
diff --git a/native_client/multistrap_ubuntu64_impish.conf b/native_client/multistrap_ubuntu64_impish.conf
index b8119606..8c39e0b4 100644
--- a/native_client/multistrap_ubuntu64_impish.conf
+++ b/native_client/multistrap_ubuntu64_impish.conf
@@ -7,7 +7,7 @@ aptsources=Debian
 cleanup=true
 
 [Debian]
-packages=apt libc6 libc6-dev libstdc++-7-dev linux-libc-dev libffi-dev libpython3.9-dev libsox-dev python3-numpy python3-setuptools
+packages=apt libc6 libc6-dev libstdc++-8-dev linux-libc-dev libffi-dev libpython3.9-dev libsox-dev python3-numpy python3-setuptools
 source=http://ports.ubuntu.com/ubuntu-ports
 keyring=ubuntu-keyring
 components=main universe