diff --git a/workers/worker-svc/Dockerfile b/workers/worker-svc/Dockerfile
index f2ccdcc..56a0751 100644
--- a/workers/worker-svc/Dockerfile
+++ b/workers/worker-svc/Dockerfile
@@ -14,6 +14,10 @@ WORKDIR /app
 COPY pkg/ ./pkg/
 COPY workers/worker-svc/ ./workers/worker-svc/
 
+# Download dependencies (populates go.sum if empty)
+RUN cd pkg && go mod download
+RUN cd workers/worker-svc && go mod download
+
 # Build from the worker directory (uses replace directive for ../pkg)
 RUN cd workers/worker-svc && CGO_ENABLED=0 go build -o /worker-svc ./cmd/worker