diff --git a/.github/workflows/nix-integration-test.yml b/.github/workflows/nix-integration-test.yml
index 1a9bc4a..fd0374e 100644
--- a/.github/workflows/nix-integration-test.yml
+++ b/.github/workflows/nix-integration-test.yml
@@ -13,5 +13,5 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
-      - uses: DeterminateSystems/nix-installer-action@da36cb69b1c3247ad7a1f931ebfd954a1105ef14 # v14
+      - uses: DeterminateSystems/nix-installer-action@e50d5f73bfe71c2dd0aa4218de8f4afa59f8f81d # v16
       - run: nix flake check
diff --git a/.github/workflows/update-flake-lock.yml b/.github/workflows/update-flake-lock.yml
index 83cb0e6..5bf8e25 100644
--- a/.github/workflows/update-flake-lock.yml
+++ b/.github/workflows/update-flake-lock.yml
@@ -14,6 +14,6 @@ jobs:
       - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
         with:
           ssh-key: ${{ secrets.UPDATE_FLAKE_LOCK_SSH_KEY }}
-      - uses: DeterminateSystems/nix-installer-action@da36cb69b1c3247ad7a1f931ebfd954a1105ef14 # v14
+      - uses: DeterminateSystems/nix-installer-action@e50d5f73bfe71c2dd0aa4218de8f4afa59f8f81d # v16
       - name: Update flake.lock
         uses: DeterminateSystems/update-flake-lock@a2bbe0274e3a0c4194390a1e445f734c597ebc37 # v24