diff --git a/2.7/onbuild/Dockerfile b/2.7/onbuild/Dockerfile
index 304d79a05..bbde8f07b 100644
--- a/2.7/onbuild/Dockerfile
+++ b/2.7/onbuild/Dockerfile
@@ -4,6 +4,7 @@ RUN mkdir -p /usr/src/app
 WORKDIR /usr/src/app
 
 ONBUILD COPY requirements.txt /usr/src/app/
+ONBUILD COPY requirements-app.txt /usr/src/app
 ONBUILD RUN pip install --no-cache-dir -r requirements.txt
 
 ONBUILD COPY . /usr/src/app