diff --git a/ci/haskell.yml b/ci/haskell.yml
index f4e3bb4..759a00b 100644
--- a/ci/haskell.yml
+++ b/ci/haskell.yml
@@ -9,8 +9,14 @@ jobs:
 
     steps:
     - uses: actions/checkout@v1
+    - uses: actions/setup-haskell@v1
+      with:
+        ghc-version: '8.6.5'
+        cabal-version: '3.0'
     - name: Install dependencies
-      run: cabal install --only-dependencies --enable-tests
+      run: |
+        cabal update
+        cabal install --only-dependencies --enable-tests
     - name: Build
       run: |
         cabal configure --enable-tests