diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 9fcfc9b..cb3b9cb 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -23,7 +23,7 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v4
       - name: Install Nix
-        uses: DeterminateSystems/nix-installer-action@v13
+        uses: DeterminateSystems/nix-installer-action@v15
 
       - name: Build
         run: nix build -L --show-trace .#${{ matrix.path }}
diff --git a/.github/workflows/check-inputs.yml b/.github/workflows/check-inputs.yml
index 8490c88..ed87769 100644
--- a/.github/workflows/check-inputs.yml
+++ b/.github/workflows/check-inputs.yml
@@ -13,7 +13,7 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v4
       - name: Install Nix
-        uses: DeterminateSystems/nix-installer-action@v13
+        uses: DeterminateSystems/nix-installer-action@v15
 
       - name: Check Nix flake Nixpkgs inputs
         uses: DeterminateSystems/flake-checker-action@v9