diff --git a/support/docker/production/Dockerfile.stretch b/support/docker/production/Dockerfile.stretch
index 7367721f4..370d17cff 100644
--- a/support/docker/production/Dockerfile.stretch
+++ b/support/docker/production/Dockerfile.stretch
@@ -58,6 +58,7 @@ RUN yarn install --pure-lockfile \
     && npm run build \
     && rm -r ./node_modules ./client/node_modules \
     && yarn install --pure-lockfile --production
+    && yarn cache clean
 
 USER root