diff --git a/Dockerfile b/Dockerfile
index 71e02e2..e1e0551 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -30,6 +30,9 @@ ENV TZ Europe/Stockholm
 # Install wgc CLI globally for Cosmo Router composition
 RUN npm install -g wgc@latest
 
+# Cap Node.js heap for runtime wgc invocations to prevent OOM
+ENV NODE_OPTIONS="--max-old-space-size=64"
+
 # Copy timezone data and certificates
 COPY --from=build /usr/share/zoneinfo /usr/share/zoneinfo
 COPY --from=build /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/