diff --git a/.github/workflows/build-iso.yml b/.github/workflows/build-iso.yml
index c46f9d139..473fb1302 100644
--- a/.github/workflows/build-iso.yml
+++ b/.github/workflows/build-iso.yml
@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
     - uses: actions/checkout@v4
-    - uses: DeterminateSystems/nix-installer-action@v14
+    - uses: DeterminateSystems/nix-installer-action@v15
     - uses: DeterminateSystems/magic-nix-cache-action@v8
     - name: Build 👷 ISO 💿️
       run: |
diff --git a/.github/workflows/flake-checker.yml b/.github/workflows/flake-checker.yml
index 36e645595..4fa7714db 100644
--- a/.github/workflows/flake-checker.yml
+++ b/.github/workflows/flake-checker.yml
@@ -17,6 +17,6 @@ jobs:
       - uses: actions/checkout@v4
         with:
           fetch-depth: 0
-      - uses: DeterminateSystems/nix-installer-action@v14
+      - uses: DeterminateSystems/nix-installer-action@v15
       - uses: DeterminateSystems/magic-nix-cache-action@v8
       - uses: DeterminateSystems/flake-checker-action@v9
diff --git a/.github/workflows/lock-updater.yml b/.github/workflows/lock-updater.yml
index 9c331ad85..37552fcdd 100644
--- a/.github/workflows/lock-updater.yml
+++ b/.github/workflows/lock-updater.yml
@@ -14,7 +14,7 @@ jobs:
       - uses: actions/checkout@v4
         with:
           fetch-depth: 0
-      - uses: DeterminateSystems/nix-installer-action@v14
+      - uses: DeterminateSystems/nix-installer-action@v15
       - uses: DeterminateSystems/magic-nix-cache-action@v8
       - uses: DeterminateSystems/update-flake-lock@v24
         with: