diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 2ced78e8360b..35717ef3f7f1 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -59,7 +59,7 @@ jobs:
           merged-as-untrusted-at: ${{ inputs.mergedSha }}
           target-as-trusted-at: ${{ inputs.targetSha }}
 
-      - uses: cachix/install-nix-action@8aa03977d8d733052d78f4e008a241fd1dbf36b3 # v31.10.6
+      - uses: cachix/install-nix-action@a49548c11d9846ad46ecc0115273879b045f001c # v31.10.7
         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 4ca2db65c165..0965864220c6 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -147,7 +147,7 @@ jobs:
           merged-as-untrusted-at: ${{ inputs.mergedSha }}
           target-as-trusted-at: ${{ inputs.targetSha }}
 
-      - uses: cachix/install-nix-action@8aa03977d8d733052d78f4e008a241fd1dbf36b3 # v31.10.6
+      - uses: cachix/install-nix-action@a49548c11d9846ad46ecc0115273879b045f001c # v31.10.7
 
       - uses: cachix/cachix-action@5f2d7c5294214f71b873db4b969586b980625e71 # v17
         continue-on-error: true
diff --git a/.github/workflows/eval.yml b/.github/workflows/eval.yml
index 0b576a464220..64a87a6f2b90 100644
--- a/.github/workflows/eval.yml
+++ b/.github/workflows/eval.yml
@@ -139,7 +139,7 @@ jobs:
             core.info(`Found pinned.json commit: ${ciPinBumpCommit}`)
 
       - name: Install Nix
-        uses: cachix/install-nix-action@8aa03977d8d733052d78f4e008a241fd1dbf36b3 # v31.10.6
+        uses: cachix/install-nix-action@a49548c11d9846ad46ecc0115273879b045f001c # v31.10.7
 
       - name: Load supported versions
         id: versions
@@ -187,7 +187,7 @@ jobs:
           target-as-trusted-at: ${{ inputs.targetSha }}
 
       - name: Install Nix
-        uses: cachix/install-nix-action@8aa03977d8d733052d78f4e008a241fd1dbf36b3 # v31.10.6
+        uses: cachix/install-nix-action@a49548c11d9846ad46ecc0115273879b045f001c # v31.10.7
 
       - uses: cachix/cachix-action@5f2d7c5294214f71b873db4b969586b980625e71 # v17
         continue-on-error: true
@@ -277,7 +277,7 @@ jobs:
           merge-multiple: true
 
       - name: Install Nix
-        uses: cachix/install-nix-action@8aa03977d8d733052d78f4e008a241fd1dbf36b3 # v31.10.6
+        uses: cachix/install-nix-action@a49548c11d9846ad46ecc0115273879b045f001c # v31.10.7
 
       - name: Combine all output paths and eval stats
         run: |
@@ -486,7 +486,7 @@ jobs:
           merged-as-untrusted-at: ${{ inputs.mergedSha }}
 
       - name: Install Nix
-        uses: cachix/install-nix-action@8aa03977d8d733052d78f4e008a241fd1dbf36b3 # v31.10.6
+        uses: cachix/install-nix-action@a49548c11d9846ad46ecc0115273879b045f001c # v31.10.7
 
       - name: Ensure flake outputs on all systems still evaluate
         run: nix flake check --all-systems --no-build './nixpkgs/untrusted?shallow=1'
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 0e0fcfc30d22..3b743fe2e53a 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@8aa03977d8d733052d78f4e008a241fd1dbf36b3 # v31.10.6
+      - uses: cachix/install-nix-action@a49548c11d9846ad46ecc0115273879b045f001c # v31.10.7
 
       # 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@8aa03977d8d733052d78f4e008a241fd1dbf36b3 # v31.10.6
+      - uses: cachix/install-nix-action@a49548c11d9846ad46ecc0115273879b045f001c # v31.10.7
 
       - uses: cachix/cachix-action@5f2d7c5294214f71b873db4b969586b980625e71 # v17
         continue-on-error: true
@@ -100,7 +100,7 @@ jobs:
           merged-as-untrusted-at: ${{ inputs.mergedSha }}
           target-as-trusted-at: ${{ inputs.targetSha }}
 
-      - uses: cachix/install-nix-action@8aa03977d8d733052d78f4e008a241fd1dbf36b3 # v31.10.6
+      - uses: cachix/install-nix-action@a49548c11d9846ad46ecc0115273879b045f001c # v31.10.7
 
       - uses: cachix/cachix-action@5f2d7c5294214f71b873db4b969586b980625e71 # v17
         continue-on-error: true