diff --git a/.docker/Dockerfile b/.docker/Dockerfile
index 89b5eb00227cf21f8a2860d8695f333108a3e24c..35dc6ecca496eece4f69599373f26a98d5e8ed62 100644
--- a/.docker/Dockerfile
+++ b/.docker/Dockerfile
@@ -23,4 +23,4 @@ RUN BIN="/usr/local/bin" && \
 COPY doc/requirements.txt requirements.txt
 RUN pip3 install -r requirements.txt
 
-RUN GO111MODULE=on go-1.15 install github.com/pseudomuto/protoc-gen-doc/cmd/protoc-gen-doc@v1.4.1
+RUN PATH=$PATH:/usr/lib/go-1.5/bin go install github.com/pseudomuto/protoc-gen-doc/cmd/protoc-gen-doc@v1.4.1