diff --git a/containers/elixir-phoenix-postgres/.devcontainer/Dockerfile b/containers/elixir-phoenix-postgres/.devcontainer/Dockerfile
index b76bd764fa..09db7d4b2d 100644
--- a/containers/elixir-phoenix-postgres/.devcontainer/Dockerfile
+++ b/containers/elixir-phoenix-postgres/.devcontainer/Dockerfile
@@ -11,8 +11,8 @@ ARG USER_GID=$USER_UID
 # Options for common package install script
 ARG INSTALL_ZSH="true"
 ARG UPGRADE_PACKAGES="true"
-ARG COMMON_SCRIPT_SOURCE="https://raw.githubusercontent.com/microsoft/vscode-dev-containers/master/script-library/common-debian.sh"
-ARG COMMON_SCRIPT_SHA="dev-mode"
+ARG COMMON_SCRIPT_SOURCE="https://raw.githubusercontent.com/microsoft/vscode-dev-containers/v0.172.0/script-library/common-debian.sh"
+ARG COMMON_SCRIPT_SHA="cffeb0893bd6ca9fad0ac7ba790df30d7656a7f3c8eae3e228fc4412806a3b99"
 
 # Optional Settings for Phoenix
 ARG PHOENIX_VERSION="1.5.4"