diff --git a/gitlab/ci_template.yml b/gitlab/ci_template.yml
index a3049dedb1..df104da330 100644
--- a/gitlab/ci_template.yml
+++ b/gitlab/ci_template.yml
@@ -122,7 +122,7 @@ build fedora x86_64:
   stage: 'build'
   image: $FEDORA_IMAGE
   variables:
-    MESON_ARGS: "${DEFAULT_MESON_ARGS} -Dsharp=enabled -Domx=enabled -Dgst-omx:target=generic ${MESON_BUILDTYPE_ARGS}"
+    MESON_ARGS: "${DEFAULT_MESON_ARGS} -Dsharp=enabled -Domx=enabled -Dgst-omx:target=generic ${MESON_BUILDTYPE_ARGS} --werror"
   except:
     variables:
       - $CI_PROJECT_NAME == "gst-docs"
@@ -133,7 +133,7 @@ build nodebug fedora x86_64:
   stage: 'build'
   image: $FEDORA_IMAGE
   variables:
-    MESON_ARGS: "${DEFAULT_MESON_ARGS} -Dsharp=enabled -Dgstreamer:gst_debug=false -Domx=enabled -Dgst-omx:target=generic -Ddoc=enabled ${MESON_BUILDTYPE_ARGS}"
+    MESON_ARGS: "${DEFAULT_MESON_ARGS} -Dsharp=enabled -Dgstreamer:gst_debug=false -Domx=enabled -Dgst-omx:target=generic -Ddoc=enabled ${MESON_BUILDTYPE_ARGS} --werror"
 
 build static fedora x86_64:
   extends: 'build fedora x86_64'