diff --git a/.github/workflows/flake-update.yml b/.github/workflows/flake-update.yml
index 2587ff4f6..02c76ad42 100644
--- a/.github/workflows/flake-update.yml
+++ b/.github/workflows/flake-update.yml
@@ -15,7 +15,7 @@ jobs:
       - uses: actions/checkout@v4
         with:
           ref: ${{ inputs.branch }}
-      - uses: DeterminateSystems/nix-installer-action@v13
+      - uses: DeterminateSystems/nix-installer-action@v16
       - name: update `flake.lock`
         run: nix flake update
       - name: commit
diff --git a/.github/workflows/nix.yml b/.github/workflows/nix.yml
index f852b95a3..4f3bbd9d3 100644
--- a/.github/workflows/nix.yml
+++ b/.github/workflows/nix.yml
@@ -10,7 +10,7 @@ jobs:
   nix:
     runs-on: ubuntu-latest
     steps:
-      - uses: DeterminateSystems/nix-installer-action@v13
+      - uses: DeterminateSystems/nix-installer-action@v16
       - uses: DeterminateSystems/magic-nix-cache-action@v7
       - name: Install & configure Cachix
         shell: bash