diff --git a/.github/workflows/linters.yml b/.github/workflows/linters.yml
index 78344490800cf0..94967139eebf00 100644
--- a/.github/workflows/linters.yml
+++ b/.github/workflows/linters.yml
@@ -149,7 +149,7 @@ jobs:
           persist-credentials: false
           sparse-checkout: '*.nix'
           sparse-checkout-cone-mode: false
-      - uses: cachix/install-nix-action@0b0e072294b088b73964f1d72dfdac0951439dbd  # v31.8.4
+      - uses: cachix/install-nix-action@4e002c8ec80594ecd40e759629461e26c8abed15  # v31.9.0
       - name: Lint Nix files
         run: |
           nix-shell -I nixpkgs=./tools/nix/pkgs.nix -p 'nixfmt-tree' --run '
diff --git a/.github/workflows/test-shared.yml b/.github/workflows/test-shared.yml
index f1509989a1f78e..caad7ec954488e 100644
--- a/.github/workflows/test-shared.yml
+++ b/.github/workflows/test-shared.yml
@@ -157,7 +157,7 @@ jobs:
           tar xzf tarballs/*.tar.gz -C "$RUNNER_TEMP"
           echo "TAR_DIR=$RUNNER_TEMP/$(basename tarballs/*.tar.gz .tar.gz)" >> "$GITHUB_ENV"
 
-      - uses: cachix/install-nix-action@0b0e072294b088b73964f1d72dfdac0951439dbd  # v31.8.4
+      - uses: cachix/install-nix-action@4e002c8ec80594ecd40e759629461e26c8abed15  # v31.9.0
         with:
           extra_nix_config: sandbox = true
 
diff --git a/.github/workflows/tools.yml b/.github/workflows/tools.yml
index d27f9f7e4672a2..7429b85c964be5 100644
--- a/.github/workflows/tools.yml
+++ b/.github/workflows/tools.yml
@@ -306,7 +306,7 @@ jobs:
           allow-prereleases: true
       - name: Set up Nix
         if: matrix.id == 'nixpkgs-unstable' && (github.event_name == 'schedule' || inputs.id == 'all' || inputs.id == matrix.id)
-        uses: cachix/install-nix-action@0b0e072294b088b73964f1d72dfdac0951439dbd  # v31.8.4
+        uses: cachix/install-nix-action@4e002c8ec80594ecd40e759629461e26c8abed15  # v31.9.0
       - run: ${{ matrix.run }}
         if: github.event_name == 'schedule' || inputs.id == 'all' || inputs.id == matrix.id
         env: