diff --git a/functions/onprem/orborus/Dockerfile b/functions/onprem/orborus/Dockerfile
index 417bf568..1d02cae1 100644
--- a/functions/onprem/orborus/Dockerfile
+++ b/functions/onprem/orborus/Dockerfile
@@ -16,6 +16,8 @@ RUN go get \
 
 COPY orborus.go .
 
+COPY go.mod .
+
 RUN go mod tidy && \
     CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o orborus .