diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 66357057628..0b806a7f697 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -555,6 +555,7 @@ meson-gallium:
     EXTRA_OPTION: >
       -D osmesa=gallium
       -D tools=all
+      -D werror=true
   script:
     - .gitlab-ci/meson-build.sh
     - .gitlab-ci/run-shader-db.sh