diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index d9a3461..8de08fb 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v4
-    - uses: cachix/install-nix-action@v20
+    - uses: cachix/install-nix-action@v23
       with:
         nix_path: nixpkgs=channel:nixos-unstable
         extra_nix_config: "system-features = nixos-test benchmark big-parallel kvm"
diff --git a/.github/workflows/update-nixos-23.05.yaml b/.github/workflows/update-nixos-23.05.yaml
index ae54915..422e82a 100644
--- a/.github/workflows/update-nixos-23.05.yaml
+++ b/.github/workflows/update-nixos-23.05.yaml
@@ -10,7 +10,7 @@ jobs:
     - name: Get date
       run: echo "BRANCH_NAME=nixpkgs-update-$(date +'%Y-%m-%dT%H%M%S')" >> $GITHUB_ENV
     - uses: actions/checkout@v4
-    - uses: cachix/install-nix-action@v20
+    - uses: cachix/install-nix-action@v23
       with:
         nix_path: nixpkgs=channel:nixos-unstable
         extra_nix_config: |