diff --git a/docker/backend/Dockerfile b/docker/backend/Dockerfile
index 550d1716b..5180e28a6 100644
--- a/docker/backend/Dockerfile
+++ b/docker/backend/Dockerfile
@@ -39,11 +39,11 @@ ENV STACK_ROOT="${PROJECT_DIR}/.stack"
 WORKDIR ${PROJECT_DIR}
 ENV HOME=${PROJECT_DIR}
 
-RUN --mount=type=bind,source=.,target=. stack install yesod-bin
-RUN --mount=type=bind,source=.,target=. stack install hpack
+RUN --mount=type=bind,source=.,target=.,rw stack install yesod-bin
+RUN --mount=type=bind,source=.,target=.,rw stack install hpack
 
 # pre-build dependencies
-RUN --mount=type=bind,source=.,target=. \
+RUN --mount=type=bind,source=.,target=.,rw \
 make -- --dependencies-backend STACK_ROOT=${STACK_ROOT} IN_CONTAINER=true JOB=${JOB}
 
 # copy source files