diff --git a/Dockerfile b/Dockerfile
index 204f5918acdd2b6fe00158907d156f5f04ab3844..51da37daf256e82dc61d5153432151e410063d47 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM python
+FROM python:3.7
 
 RUN pip install --upgrade pip