Set GERRIT_VERSION to master

Change-Id: I7d0c49ef28369a4b594aa9d813a8cf3a1c6f2867
diff --git a/src/test/docker/gerrit/Dockerfile b/src/test/docker/gerrit/Dockerfile
index 74ba1a2..aeac272 100644
--- a/src/test/docker/gerrit/Dockerfile
+++ b/src/test/docker/gerrit/Dockerfile
@@ -10,7 +10,7 @@
     gettext \
     && yum -y clean all
 
-ENV GERRIT_VERSION stable-3.11
+ENV GERRIT_VERSION master
 
 # Add gerrit user
 RUN adduser -p -m --uid 1000 gerrit --home-dir /home/gerrit