diff --git a/.github/workflows/docs.yaml b/.github/workflows/docs.yaml
index 0cb7490..80b57da 100644
--- a/.github/workflows/docs.yaml
+++ b/.github/workflows/docs.yaml
@@ -13,7 +13,7 @@ jobs:
         with:
           # Nix Flakes doesn't work on shallow clones
           fetch-depth: 0
-      - uses: cachix/install-nix-action@v22
+      - uses: cachix/install-nix-action@v23
       - run: nix run .#mmdoc -- mmdoc doc out
       - if: success()
         uses: crazy-max/ghaction-github-pages@v3
diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index cc7b15f..035d3a0 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: cachix/install-nix-action@v22
+      - uses: cachix/install-nix-action@v23
       - name: List flake structure
         run: nix flake show
       - name: Build and test
@@ -24,6 +24,6 @@ jobs:
     runs-on: macos-11
     steps:
       - uses: actions/checkout@v4
-      - uses: cachix/install-nix-action@v22
+      - uses: cachix/install-nix-action@v23
       - name: Build and test
         run: nix build -L