diff --git a/.github/workflows/jekyll-gh-pages.yml b/.github/workflows/jekyll-gh-pages.yml
index 8ceb52e..633a00b 100644
--- a/.github/workflows/jekyll-gh-pages.yml
+++ b/.github/workflows/jekyll-gh-pages.yml
@@ -20,7 +20,7 @@ jobs:
         uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
       - name: Setup Pages
         uses: actions/configure-pages@1f0c5cde4bc74cd7e1254d0cb4de8d49e9068c7d # v4.0.0
-      - uses: cachix/install-nix-action@6004951b182f8860210c8d6f0d808ec5b1a33d28 # v25
+      - uses: cachix/install-nix-action@8887e596b4ee1134dae06b98d573bd674693f47c # v26
       - uses: cachix/cachix-action@18cf96c7c98e048e10a83abd92116114cd8504be # v14
         with:
           name: linz
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 94e8418..cfa23b6 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -13,7 +13,7 @@ jobs:
         with:
           fetch-depth: 0 # Enable gitlint to check all PR commit messages
 
-      - uses: cachix/install-nix-action@6004951b182f8860210c8d6f0d808ec5b1a33d28 # v25
+      - uses: cachix/install-nix-action@8887e596b4ee1134dae06b98d573bd674693f47c # v26
 
       - uses: cachix/cachix-action@18cf96c7c98e048e10a83abd92116114cd8504be # v14
         with:
@@ -46,7 +46,7 @@ jobs:
       - name: Check out repository
         uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
 
-      - uses: cachix/install-nix-action@6004951b182f8860210c8d6f0d808ec5b1a33d28 # v25
+      - uses: cachix/install-nix-action@8887e596b4ee1134dae06b98d573bd674693f47c # v26
 
       - uses: cachix/cachix-action@18cf96c7c98e048e10a83abd92116114cd8504be # v14
         with:
@@ -73,7 +73,7 @@ jobs:
       - name: Check out repository
         uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
 
-      - uses: cachix/install-nix-action@6004951b182f8860210c8d6f0d808ec5b1a33d28 # v25
+      - uses: cachix/install-nix-action@8887e596b4ee1134dae06b98d573bd674693f47c # v26
 
       - uses: cachix/cachix-action@18cf96c7c98e048e10a83abd92116114cd8504be # v14
         with: