diff --git a/Dockerfile b/Dockerfile
index b0ac890..bac85dd 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -6,6 +6,7 @@ RUN useradd -u 1001 go
 WORKDIR /app
 
 COPY go.mod go.sum ./
+COPY third_party/envy/go.mod ./third_party/envy/
 RUN go mod download
 
 COPY . .
diff --git a/third_party/envy/go.mod b/third_party/envy/go.mod
index 6a28d1b..254359f 100644
--- a/third_party/envy/go.mod
+++ b/third_party/envy/go.mod
@@ -1,3 +1,3 @@
-module .
+module willnorris.com/go/imageproxy/third_party/envy
 
 go 1.12