diff --git a/.github/workflows/ci-prover-e2e.yml b/.github/workflows/ci-prover-e2e.yml
index c448d35fa1e..21515a6e987 100644
--- a/.github/workflows/ci-prover-e2e.yml
+++ b/.github/workflows/ci-prover-e2e.yml
@@ -74,8 +74,7 @@ jobs:
         working-directory: ./chains/proving_chain/configs
         if: matrix.compressor-mode == 'fflonk'
         run: |
-          apt-get install yq
-          yq e '.eth.sender.verifier_pre_fflonk = false' -i general.yaml
+          sed -i 's/verifier_pre_fflonk: true/verifier_pre_fflonk: false/' general.yaml
 
       - name: Prepare prover subsystem
         run: |