diff --git a/.github/workflows/ci-tests-nix.yml b/.github/workflows/ci-tests-nix.yml
index ca153bf..618f1a6 100644
--- a/.github/workflows/ci-tests-nix.yml
+++ b/.github/workflows/ci-tests-nix.yml
@@ -11,7 +11,7 @@ jobs:
     steps:
       - name: Checkout sources
         uses: actions/checkout@v4
-      - uses: cachix/install-nix-action@v25
+      - uses: cachix/install-nix-action@v26
       - name: Build Nix package
         run: nix build
       - name: Check Flake formatting