diff --git a/testing/docker/centos6-build/system-setup.sh b/testing/docker/centos6-build/system-setup.sh
index 9ff63b4afc57..f7ca4e2b6279 100644
--- a/testing/docker/centos6-build/system-setup.sh
+++ b/testing/docker/centos6-build/system-setup.sh
@@ -425,7 +425,7 @@ EOF
 peep install -r requirements.txt
 
 # TC-VCS
-npm install -g taskcluster-vcs@2.3.12
+npm install -g taskcluster-vcs@2.3.18
 
 # Ninja
 cd $BUILD