diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 1ded7b8..56345c9 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -25,7 +25,7 @@ jobs:
     steps:
       - uses: actions/checkout@v6
       - uses: cachix/install-nix-action@1ca7d21a94afc7c957383a2d217460d980de4934 # v31
-      - uses: cachix/cachix-action@v16
+      - uses: cachix/cachix-action@v17
         with:
           name: nixpkgs-python
           authToken: "${{ secrets.CACHIX_AUTH_TOKEN }}"
diff --git a/.github/workflows/update.yml b/.github/workflows/update.yml
index e569084..804d2e9 100644
--- a/.github/workflows/update.yml
+++ b/.github/workflows/update.yml
@@ -22,7 +22,7 @@ jobs:
       - name: Install Nix
         uses: cachix/install-nix-action@1ca7d21a94afc7c957383a2d217460d980de4934 # v31
       - name: Install Cachix
-        uses: cachix/cachix-action@v16
+        uses: cachix/cachix-action@v17
         with:
           name: nixpkgs-python
           extraPullNames: devenv