diff --git a/containers/elixir-phoenix-postgres/.devcontainer/Dockerfile b/containers/elixir-phoenix-postgres/.devcontainer/Dockerfile
index b76bd764fa..67f182a502 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/v0.166.0/script-library/common-debian.sh"
+ARG COMMON_SCRIPT_SHA="15b16a76d347180cfc24cb79d4149512da3997f15e4d3e176a7515081fd9471e"
 
 # Optional Settings for Phoenix
 ARG PHOENIX_VERSION="1.5.4"