diff --git a/Dockerfile b/Dockerfile
index 2230ffda..f0e72955 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -4,7 +4,8 @@ WORKDIR /usr/src/app
 
 ENV PYTHONDONTWRITEBYTECODE=1 \
     PYTHONUNBUFFERED=1 \
-    PIP_NO_CACHE_DIR=1
+    PIP_NO_CACHE_DIR=1 \
+    PYTHONPATH=/usr/src/app/vendor:/usr/src/app
 
 RUN apt-get update && apt-get install -y --no-install-recommends \
     git \