diff --git a/.circleci/config.yml b/.circleci/config.yml
index bf3b232..08e6f93 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -8,5 +8,5 @@ jobs:
         steps:
             - checkout
             - run: gem install puppet-lint
-            - run: puppet-lint modules/
-            - run: puppet-lint manifests/
+            - run: puppet-lint modules/ --fail-on-warnings
+            - run: puppet-lint manifests/ --fail-on-warnings