diff --git a/.github/workflows/book-gh-pages.yml b/.github/workflows/book-gh-pages.yml
index 64c60f6a..cf40a630 100644
--- a/.github/workflows/book-gh-pages.yml
+++ b/.github/workflows/book-gh-pages.yml
@@ -27,7 +27,7 @@ jobs:
       - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
         with:
           persist-credentials: false
-      - uses: cachix/install-nix-action@ba0dd844c9180cbf77aa72a116d6fbc515d0e87b # v27
+      - uses: cachix/install-nix-action@3715ab1a11cac9e991980d7b4a28d80c7ebdd8f9 # v27
       - name: "Build documentation book"
         run: |
           nix build '.#docs' --print-build-logs
diff --git a/.github/workflows/editorconfig.yml b/.github/workflows/editorconfig.yml
index bb1744d0..8f304a62 100644
--- a/.github/workflows/editorconfig.yml
+++ b/.github/workflows/editorconfig.yml
@@ -13,6 +13,6 @@ jobs:
     - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
       with:
         persist-credentials: false
-    - uses: cachix/install-nix-action@ba0dd844c9180cbf77aa72a116d6fbc515d0e87b # v27
+    - uses: cachix/install-nix-action@3715ab1a11cac9e991980d7b4a28d80c7ebdd8f9 # v27
     - name: "Check EditorConfig"
       run: nix run 'nixpkgs#eclint' --inputs-from .
diff --git a/.github/workflows/formatting.yml b/.github/workflows/formatting.yml
index ee2861d8..3623c05b 100644
--- a/.github/workflows/formatting.yml
+++ b/.github/workflows/formatting.yml
@@ -13,6 +13,6 @@ jobs:
     - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
       with:
         persist-credentials: false
-    - uses: cachix/install-nix-action@ba0dd844c9180cbf77aa72a116d6fbc515d0e87b # v27
+    - uses: cachix/install-nix-action@3715ab1a11cac9e991980d7b4a28d80c7ebdd8f9 # v27
     - name: "Check Formatting"
       run: nix fmt -- --check .
diff --git a/.github/workflows/update-flake-lock.yml b/.github/workflows/update-flake-lock.yml
index 4ee2fa21..7c4bfe74 100644
--- a/.github/workflows/update-flake-lock.yml
+++ b/.github/workflows/update-flake-lock.yml
@@ -31,7 +31,7 @@ jobs:
         with:
           ref: ${{ matrix.branch }}
           persist-credentials: false
-      - uses: cachix/install-nix-action@ba0dd844c9180cbf77aa72a116d6fbc515d0e87b # v27
+      - uses: cachix/install-nix-action@3715ab1a11cac9e991980d7b4a28d80c7ebdd8f9 # v27
       - uses: DeterminateSystems/update-flake-lock@db4ee38117a597ea8df8f7f75a187dd65093eade # v23
         with:
           branch: "update-flake-lock/${{ matrix.branch }}"