diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index e4a5757..f18b024 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -25,5 +25,5 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4
-      - uses: cachix/install-nix-action@v27
+      - uses: cachix/install-nix-action@v29
       - run: nix run nixpkgs#taplo -- fmt --check
diff --git a/.github/workflows/nix.yml b/.github/workflows/nix.yml
index 20d9047..08e4fe7 100644
--- a/.github/workflows/nix.yml
+++ b/.github/workflows/nix.yml
@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4
-      - uses: cachix/install-nix-action@v27
+      - uses: cachix/install-nix-action@v29
         with:
           extra_nix_config: |
             access-tokens = github.com=${{ github.token }}
@@ -37,7 +37,7 @@ jobs:
     runs-on: [ matterlabs-default-infra-runners ]
     steps:
       - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4
-      - uses: cachix/install-nix-action@v27
+      - uses: cachix/install-nix-action@v29
         with:
           extra_nix_config: |
             access-tokens = github.com=${{ github.token }}
@@ -75,7 +75,7 @@ jobs:
           - { nixpackage: 'container-verify-era-proof-attestation-sgx' }
     steps:
       - uses: actions/checkout@v4
-      - uses: cachix/install-nix-action@v27
+      - uses: cachix/install-nix-action@v29
         with:
           extra_nix_config: |
             access-tokens = github.com=${{ github.token }}