diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index d49eb4b8d..034a8548b 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -23,7 +23,7 @@ jobs:
           ref: ${{ github.ref }}
           
       - name: Install Nix
-        uses: cachix/install-nix-action@v30
+        uses: cachix/install-nix-action@v31
 
       - name: Publish on FlakeHub
         uses: determinatesystems/flakehub-push@v5
diff --git a/.github/workflows/update-flake.yml b/.github/workflows/update-flake.yml
index 5e978f356..f54c09528 100644
--- a/.github/workflows/update-flake.yml
+++ b/.github/workflows/update-flake.yml
@@ -17,7 +17,7 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4
-      - uses: cachix/install-nix-action@08dcb3a5e62fa31e2da3d490afc4176ef55ecd72 # v30
+      - uses: cachix/install-nix-action@91a071959513ca103b54280ac0bef5b825791d4d # v31
 
       - uses: DeterminateSystems/update-flake-lock@v24
         with: