diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index d347af93e79ced925088583b5799848af222a10d..f667389484ea1de393ca8de7795769409857d450 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -188,6 +188,6 @@ Flake8:
   - curl -L -O -k https://gitlab.tiker.net/inducer/ci-support/raw/master/prepare-and-run-flake8.sh
   - ". ./prepare-and-run-flake8.sh pyopencl test"
   tags:
-  - python3.5
+  - python3.6
   except:
   - tags