diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 1803c42..2565318 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -11,7 +11,7 @@ jobs:
         extra_nix_config: |
           accept-flake-config = true
           access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
-    - uses: cachix/cachix-action@v14
+    - uses: cachix/cachix-action@v15
       with:
         name: klarkc
         authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
@@ -25,7 +25,7 @@ jobs:
         extra_nix_config: |
           accept-flake-config = true
           access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
-    - uses: cachix/cachix-action@v14
+    - uses: cachix/cachix-action@v15
       with:
         name: klarkc
         authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
diff --git a/.github/workflows/update-flake-lock.yml b/.github/workflows/update-flake-lock.yml
index 8afbe17..18c638a 100644
--- a/.github/workflows/update-flake-lock.yml
+++ b/.github/workflows/update-flake-lock.yml
@@ -15,7 +15,7 @@ jobs:
         with:
           extra_nix_config: |
             access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
-      - uses: cachix/cachix-action@v14
+      - uses: cachix/cachix-action@v15
         with:
           name: klarkc
           authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'