diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index be0b4f7..f398c7c 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -16,7 +16,7 @@ jobs:
       - name: Check Nix flake inputs
         uses: DeterminateSystems/flake-checker-action@v5
       - name: Install Nix
-        uses: DeterminateSystems/nix-installer-action@v8
+        uses: DeterminateSystems/nix-installer-action@v9
       - name: Setup Cachix
         uses: cachix/cachix-action@v13
         with:
@@ -40,7 +40,7 @@ jobs:
       - name: Checkout code
         uses: actions/checkout@v4
       - name: Install Nix
-        uses: DeterminateSystems/nix-installer-action@v8
+        uses: DeterminateSystems/nix-installer-action@v9
       - name: Replace inputs on templates
         run: sed -i 's/github:stackbuilders\/nixpkgs-terraform/github:stackbuilders\/nixpkgs-terraform\/${{ github.sha }}/g' templates/*/flake.nix
       - name: Create a temporary directory
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 170f039..ccc92ba 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -27,7 +27,7 @@ jobs:
         with:
           ref: ${{ inputs.tag || github.ref_name }}
       - name: Install Nix
-        uses: DeterminateSystems/nix-installer-action@v8
+        uses: DeterminateSystems/nix-installer-action@v9
       - name: Publish flake
         uses: DeterminateSystems/flakehub-push@v3
         with:
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 4140670..4011aff 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -22,7 +22,7 @@ jobs:
       - name: Checkout code
         uses: actions/checkout@v4
       - name: Install Nix
-        uses: DeterminateSystems/nix-installer-action@v8
+        uses: DeterminateSystems/nix-installer-action@v9
       - name: Install tools via Nix
         run: nix develop --check
       - name: Install dependencies
diff --git a/.github/workflows/update.yml b/.github/workflows/update.yml
index 9e04ba2..740d6e9 100644
--- a/.github/workflows/update.yml
+++ b/.github/workflows/update.yml
@@ -21,7 +21,7 @@ jobs:
         with:
           ref: main
       - name: Install Nix
-        uses: DeterminateSystems/nix-installer-action@v8
+        uses: DeterminateSystems/nix-installer-action@v9
       - name: Install tools via Nix
         run: nix develop --impure --check
       - name: Update versions