diff --git a/dev-support/docker/Dockerfile b/dev-support/docker/Dockerfile
index 5aa0b65501b..1c2a5d5ca5e 100644
--- a/dev-support/docker/Dockerfile
+++ b/dev-support/docker/Dockerfile
@@ -168,7 +168,8 @@ RUN apt-get -q update \
 ####
 RUN pip2 install \
     configparser==4.0.2 \
-    pylint==1.9.2
+    pylint==1.9.2 \
+    isort==4.3.21
 
 ####
 # Install dateutil.parser