diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 01b2f4a7b1d5..2050789b6718 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -62,7 +62,7 @@ jobs:
           merged-as-untrusted-at: ${{ inputs.mergedSha }}
           target-as-trusted-at: ${{ inputs.targetSha }}
 
-      - uses: cachix/install-nix-action@456688f15bc354bef6d396e4a35f4f89d40bf2b7 # v31
+      - uses: cachix/install-nix-action@7ec16f2c061ab07b235a7245e06ed46fe9a1cab6 # v31
         with:
           # Sandbox is disabled on MacOS by default.
           extra_nix_config: sandbox = true
diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index dfcbbd8b45c1..6d26cb9ed229 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -85,7 +85,7 @@ jobs:
           merged-as-untrusted-at: ${{ inputs.mergedSha }}
           target-as-trusted-at: ${{ inputs.targetSha }}
 
-      - uses: cachix/install-nix-action@456688f15bc354bef6d396e4a35f4f89d40bf2b7 # v31
+      - uses: cachix/install-nix-action@7ec16f2c061ab07b235a7245e06ed46fe9a1cab6 # v31
 
       - uses: cachix/cachix-action@0fc020193b5a1fa3ac4575aa3a7d3aa6a35435ad # v16
         with:
diff --git a/.github/workflows/eval.yml b/.github/workflows/eval.yml
index fcacd60da6a2..088ff13f4008 100644
--- a/.github/workflows/eval.yml
+++ b/.github/workflows/eval.yml
@@ -54,7 +54,7 @@ jobs:
             ci/pinned.json
 
       - name: Install Nix
-        uses: cachix/install-nix-action@456688f15bc354bef6d396e4a35f4f89d40bf2b7 # v31
+        uses: cachix/install-nix-action@7ec16f2c061ab07b235a7245e06ed46fe9a1cab6 # v31
 
       - name: Load supported versions
         id: versions
@@ -100,7 +100,7 @@ jobs:
           target-as-trusted-at: ${{ inputs.targetSha }}
 
       - name: Install Nix
-        uses: cachix/install-nix-action@456688f15bc354bef6d396e4a35f4f89d40bf2b7 # v31
+        uses: cachix/install-nix-action@7ec16f2c061ab07b235a7245e06ed46fe9a1cab6 # v31
 
       - uses: cachix/cachix-action@0fc020193b5a1fa3ac4575aa3a7d3aa6a35435ad # v16
         with:
@@ -188,7 +188,7 @@ jobs:
           merge-multiple: true
 
       - name: Install Nix
-        uses: cachix/install-nix-action@456688f15bc354bef6d396e4a35f4f89d40bf2b7 # v31
+        uses: cachix/install-nix-action@7ec16f2c061ab07b235a7245e06ed46fe9a1cab6 # v31
 
       - name: Combine all output paths and eval stats
         run: |
@@ -351,7 +351,7 @@ jobs:
           merged-as-untrusted-at: ${{ inputs.mergedSha }}
 
       - name: Install Nix
-        uses: cachix/install-nix-action@456688f15bc354bef6d396e4a35f4f89d40bf2b7 # v31
+        uses: cachix/install-nix-action@7ec16f2c061ab07b235a7245e06ed46fe9a1cab6 # v31
 
       - name: Run misc eval tasks in parallel
         run: |
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 8b900a8261f2..29154eea1dba 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -35,7 +35,7 @@ jobs:
         with:
           merged-as-untrusted-at: ${{ inputs.mergedSha }}
 
-      - uses: cachix/install-nix-action@456688f15bc354bef6d396e4a35f4f89d40bf2b7 # v31
+      - uses: cachix/install-nix-action@7ec16f2c061ab07b235a7245e06ed46fe9a1cab6 # v31
 
       # TODO: Figure out how to best enable caching for the treefmt job. Cachix won't work well,
       # because the cache would be invalidated on every commit - treefmt checks every file.
@@ -70,7 +70,7 @@ jobs:
         with:
           merged-as-untrusted-at: ${{ inputs.mergedSha }}
 
-      - uses: cachix/install-nix-action@456688f15bc354bef6d396e4a35f4f89d40bf2b7 # v31
+      - uses: cachix/install-nix-action@7ec16f2c061ab07b235a7245e06ed46fe9a1cab6 # v31
 
       - uses: cachix/cachix-action@0fc020193b5a1fa3ac4575aa3a7d3aa6a35435ad # v16
         with:
@@ -99,7 +99,7 @@ jobs:
           merged-as-untrusted-at: ${{ inputs.mergedSha }}
           target-as-trusted-at: ${{ inputs.targetSha }}
 
-      - uses: cachix/install-nix-action@456688f15bc354bef6d396e4a35f4f89d40bf2b7 # v31
+      - uses: cachix/install-nix-action@7ec16f2c061ab07b235a7245e06ed46fe9a1cab6 # v31
 
       - uses: cachix/cachix-action@0fc020193b5a1fa3ac4575aa3a7d3aa6a35435ad # v16
         with: