diff --git a/.github/workflows/nix.yml b/.github/workflows/nix.yml
index 3f697b7..762af3b 100644
--- a/.github/workflows/nix.yml
+++ b/.github/workflows/nix.yml
@@ -16,7 +16,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - uses: cachix/install-nix-action@V27
-      - uses: cachix/cachix-action@v14
+      - uses: cachix/cachix-action@v15
         with:
           name: numtide
           authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
@@ -36,7 +36,7 @@ jobs:
           # Nix Flakes doesn't work on shallow clones
           fetch-depth: 0
       - uses: cachix/install-nix-action@V27
-      - uses: cachix/cachix-action@v14
+      - uses: cachix/cachix-action@v15
         with:
           name: numtide
           authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
@@ -52,7 +52,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - uses: cachix/install-nix-action@V27
-      - uses: cachix/cachix-action@v14
+      - uses: cachix/cachix-action@v15
         with:
           name: numtide
           authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'