diff --git a/lsp/Dockerfile b/lsp/Dockerfile
index 6eb62bf6c2..5efacb1a1a 100644
--- a/lsp/Dockerfile
+++ b/lsp/Dockerfile
@@ -20,5 +20,7 @@ RUN pipenv install
 
 COPY pyls_launcher.py .
 
+EXPOSE 3001
+
 CMD ["python3" ,"pyls_launcher.py"]