diff --git a/.github/workflows/flake-review-build-reusable.yml b/.github/workflows/flake-review-build-reusable.yml
index b8d8e1d..b8ceedb 100644
--- a/.github/workflows/flake-review-build-reusable.yml
+++ b/.github/workflows/flake-review-build-reusable.yml
@@ -54,7 +54,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - name: Install Nix
-        uses: DeterminateSystems/determinate-nix-action@v3.15.2
+        uses: DeterminateSystems/determinate-nix-action@v3.21.0
         with:
           extra-conf: |
             extra-experimental-features = nix-command flakes
diff --git a/.github/workflows/flake-review-reusable.yml b/.github/workflows/flake-review-reusable.yml
index a9df881..c4ce1da 100644
--- a/.github/workflows/flake-review-reusable.yml
+++ b/.github/workflows/flake-review-reusable.yml
@@ -57,7 +57,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - name: Install Nix
-        uses: DeterminateSystems/determinate-nix-action@v3.15.2
+        uses: DeterminateSystems/determinate-nix-action@v3.21.0
         with:
           extra-conf: |
             extra-experimental-features = nix-command flakes