diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index f848bdc..a3a598c 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -61,6 +61,7 @@ jobs:
           --ghc-options="-Werror -Wall"
           --allow-newer
       - run: cabal update
+      - run: cabal outdated --exit-code
       - run: cabal freeze
       - run: cabal build
       - run: cabal test