diff --git a/backend/docker/benefit.Dockerfile b/backend/docker/benefit.Dockerfile
index 9c2d0ef10d..504357fe9c 100644
--- a/backend/docker/benefit.Dockerfile
+++ b/backend/docker/benefit.Dockerfile
@@ -1,5 +1,5 @@
 # ==============================
-FROM helsinkitest/python:3.9-slim as appbase
+FROM helsinkitest/python:3.9-slim AS appbase
 # ==============================
 ARG SENTRY_RELEASE
 
@@ -29,7 +29,7 @@ ENTRYPOINT ["/entrypoint/docker-entrypoint.sh"]
 COPY --chown=appuser:appuser benefit /app/
 
 # ==============================
-FROM appbase as development
+FROM appbase AS development
 # ==============================
 
 COPY --chown=appuser:appuser benefit/requirements-dev.txt /app/requirements-dev.txt
@@ -50,7 +50,7 @@ RUN django-admin compilemessages
 EXPOSE 8000/tcp
 
 # ==============================
-FROM appbase as production
+FROM appbase AS production
 # ==============================
 ARG SENTRY_RELEASE
 ENV SENTRY_RELEASE=$SENTRY_RELEASE
diff --git a/frontend/Dockerfile b/frontend/Dockerfile
index c59493fba5..4761bf1543 100644
--- a/frontend/Dockerfile
+++ b/frontend/Dockerfile
@@ -1,5 +1,5 @@
 # =======================================
-FROM helsinkitest/node:18-slim AS distbase
+FROM docker.io/helsinkitest/node:18-slim AS distbase
 # =======================================
 
 # Install ca-certificates so that Sentry can upload source maps