diff --git a/Dockerfile b/Dockerfile
index 9d3f3742..9fc22b42 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -6,6 +6,7 @@ COPY assets/ ./assets/
 RUN npm install && NODE_ENV=production ./node_modules/gulp/bin/gulp.js
 
 FROM golang:latest AS binarybuilder
+RUN go get -u github.com/gobuffalo/packr/packr
 WORKDIR /go/src/github.com/usefathom/fathom
 COPY . /go/src/github.com/usefathom/fathom
 COPY --from=assetbuilder /app/assets/build ./assets/build