diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 9579b7e..715e238 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -55,7 +55,7 @@ jobs:
         ref: 'main'
 
     - name: 0-2. Install Nix
-      uses: nixbuild/nix-quick-install-action@v33
+      uses: nixbuild/nix-quick-install-action@v34
       with:
         nix_conf: ${{ env.nix_conf }}
 
diff --git a/.github/workflows/update.yml b/.github/workflows/update.yml
index 85fbaa4..4d0585e 100644
--- a/.github/workflows/update.yml
+++ b/.github/workflows/update.yml
@@ -41,7 +41,7 @@ jobs:
       uses: actions/checkout@v5
 
     - name: 0-2. Install Nix
-      uses: nixbuild/nix-quick-install-action@v33
+      uses: nixbuild/nix-quick-install-action@v34
 
     - name: 1-1. Update flake.lock
       if: ${{ inputs.update_lock == true || github.event_name == 'schedule' }}