diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 541fbd2..66cbf22 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -63,7 +63,7 @@ jobs:
         solc-select use 0.5.7 --always-install
     - name: Set up nix
       if: matrix.type == 'dapp'
-      uses: cachix/install-nix-action@v25
+      uses: cachix/install-nix-action@V27
     - name: Set up cachix
       if: matrix.type == 'dapp'
       uses: cachix/cachix-action@v14