diff --git a/.github/workflows/cabal.yml b/.github/workflows/cabal.yml
index 7c34d88..bb7e1e1 100644
--- a/.github/workflows/cabal.yml
+++ b/.github/workflows/cabal.yml
@@ -8,7 +8,7 @@ on:
 
 jobs:
   build:
-    name: ghc ${{ matrix.vers.ghc }}
+    name: ghc-${{ matrix.vers.ghc }}
     runs-on: ubuntu-latest
     strategy:
       matrix:
@@ -37,6 +37,7 @@ jobs:
     - name: build
       run: |
         cabal update
+        cabal install dhall-1.42.1
         GHC_VERSION=${{ matrix.vers.ghc }} STACKAGE_VERSION=${{ matrix.vers.stackage }} make -f project-files.mk
         cabal build all --enable-tests