diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index d0562998..584a65d8 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,4 +1,4 @@
-# vim: set expandtab shiftwidth=2 tabstop=8 textwidth=0:
+# vim: set expandtab shiftwidth=2 tabstop=8 textwidth=0 filetype=yaml:
 #
 # This is a bit complicated for two reasons:
 # - we really want to run dnf/apt/... only once, updating on the test runner for
diff --git a/.gitlab-ci/gitlab-ci.tmpl b/.gitlab-ci/gitlab-ci.tmpl
index a744eb53..5e1a7000 100644
--- a/.gitlab-ci/gitlab-ci.tmpl
+++ b/.gitlab-ci/gitlab-ci.tmpl
@@ -1,4 +1,4 @@
-# vim: set expandtab shiftwidth=2 tabstop=8 textwidth=0:
+# vim: set expandtab shiftwidth=2 tabstop=8 textwidth=0 filetype=yaml:
 #
 # This is a bit complicated for two reasons:
 # - we really want to run dnf/apt/... only once, updating on the test runner for