diff --git a/share/spack/gitlab/cloud_pipelines/configs/config.yaml b/share/spack/gitlab/cloud_pipelines/configs/config.yaml
index abc5a4bacda..a79fe953abf 100644
--- a/share/spack/gitlab/cloud_pipelines/configs/config.yaml
+++ b/share/spack/gitlab/cloud_pipelines/configs/config.yaml
@@ -1,7 +1,7 @@
 config:
   db_lock_timeout: 120
   shared_linking:
-    missing_library_policy: warn
+    missing_library_policy: error
   install_tree:
     root: /home/software/spack
     padded_length: 256