diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 8e6d85c..67565bc 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -29,7 +29,7 @@ jobs:
       with:
         fetch-depth: 0 # so that NerdBank.GitVersioning has access to history
     - name: Install Nix
-      uses: cachix/install-nix-action@a49548c11d9846ad46ecc0115273879b045f001c # v31
+      uses: cachix/install-nix-action@630ae543ea3a38a9a4166f03376c02c50f408342 # v31
       with:
         extra_nix_config: |
           access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
@@ -50,7 +50,7 @@ jobs:
         with:
           fetch-depth: 0 # so that NerdBank.GitVersioning has access to history
       - name: Install Nix
-        uses: cachix/install-nix-action@a49548c11d9846ad46ecc0115273879b045f001c # v31
+        uses: cachix/install-nix-action@630ae543ea3a38a9a4166f03376c02c50f408342 # v31
         with:
           extra_nix_config: |
             access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
@@ -67,7 +67,7 @@ jobs:
       - name: Checkout
         uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
       - name: Install Nix
-        uses: cachix/install-nix-action@a49548c11d9846ad46ecc0115273879b045f001c # v31
+        uses: cachix/install-nix-action@630ae543ea3a38a9a4166f03376c02c50f408342 # v31
         with:
           extra_nix_config: |
             access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
@@ -82,7 +82,7 @@ jobs:
       - name: Checkout
         uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
       - name: Install Nix
-        uses: cachix/install-nix-action@a49548c11d9846ad46ecc0115273879b045f001c # v31
+        uses: cachix/install-nix-action@630ae543ea3a38a9a4166f03376c02c50f408342 # v31
         with:
           extra_nix_config: |
             access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
@@ -95,7 +95,7 @@ jobs:
       - name: Checkout
         uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
       - name: Install Nix
-        uses: cachix/install-nix-action@a49548c11d9846ad46ecc0115273879b045f001c # v31
+        uses: cachix/install-nix-action@630ae543ea3a38a9a4166f03376c02c50f408342 # v31
         with:
           extra_nix_config: |
             access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
@@ -108,7 +108,7 @@ jobs:
     steps:
       - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # master
       - name: Install Nix
-        uses: cachix/install-nix-action@a49548c11d9846ad46ecc0115273879b045f001c # v31
+        uses: cachix/install-nix-action@630ae543ea3a38a9a4166f03376c02c50f408342 # v31
         with:
           extra_nix_config: |
             access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
@@ -121,7 +121,7 @@ jobs:
     steps:
       - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # master
       - name: Install Nix
-        uses: cachix/install-nix-action@a49548c11d9846ad46ecc0115273879b045f001c # v31
+        uses: cachix/install-nix-action@630ae543ea3a38a9a4166f03376c02c50f408342 # v31
         with:
           extra_nix_config: |
             access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
@@ -135,7 +135,7 @@ jobs:
       with:
         fetch-depth: 0 # so that NerdBank.GitVersioning has access to history
     - name: Install Nix
-      uses: cachix/install-nix-action@a49548c11d9846ad46ecc0115273879b045f001c # v31
+      uses: cachix/install-nix-action@630ae543ea3a38a9a4166f03376c02c50f408342 # v31
       with:
         extra_nix_config: |
           access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
@@ -230,7 +230,7 @@ jobs:
     steps:
       - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
       - name: Install Nix
-        uses: cachix/install-nix-action@a49548c11d9846ad46ecc0115273879b045f001c # v31
+        uses: cachix/install-nix-action@630ae543ea3a38a9a4166f03376c02c50f408342 # v31
         with:
           extra_nix_config: |
             access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}