diff --git a/.github/workflows/prototyping.yml b/.github/workflows/prototyping.yml
index 4b212c14..733c5720 100644
--- a/.github/workflows/prototyping.yml
+++ b/.github/workflows/prototyping.yml
@@ -33,8 +33,8 @@ jobs:
     - name: cabal install
       working-directory: prototyping
       run: |
-        cabal install Agda-${{ env.AGDA_VERSION }} --index-state=${{ env.INDEX_STATE }}
-        cabal install --lib scientific vector aeson --package-env . --index-state=${{ env.INDEX_STATE }}
+        cabal install Agda-${{ env.AGDA_VERSION }} --index-state=${{ env.INDEX_STATE }} --verbose=3
+        cabal install --lib scientific vector aeson --package-env . --index-state=${{ env.INDEX_STATE }} --verbose=3
     - name: check targets
       working-directory: prototyping
       run: |