diff --git a/.github/workflows/haskell.yml b/.github/workflows/haskell.yml
index cf351ad59..b35f41787 100644
--- a/.github/workflows/haskell.yml
+++ b/.github/workflows/haskell.yml
@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-16.04
     strategy:
       matrix:
-        ghc: ["8.8.1", "8.5.6"]
+        ghc: ["8.8.1", "8.6.5"]
         cabal: ["3.0"]
 
     steps: