diff --git a/.github/workflows/docker_build_push.sh b/.github/workflows/docker_build_push.sh
index 672ff84c33ae3..642b9b53db6de 100755
--- a/.github/workflows/docker_build_push.sh
+++ b/.github/workflows/docker_build_push.sh
@@ -50,7 +50,6 @@ docker build --target lean \
   -t "${REPO_NAME}:${SHA}" \
   -t "${REPO_NAME}:${REFSPEC}" \
   -t "${REPO_NAME}:${LATEST_TAG}" \
-  --build-arg PY_VER="3.9-slim"\
   --label "sha=${SHA}" \
   --label "built_at=$(date)" \
   --label "target=lean" \