diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index a1c83f3..d12ec6a 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -17,7 +17,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v3
-      - uses: cachix/install-nix-action@v17
+      - uses: cachix/install-nix-action@v20
         with:
           extra_nix_config: |
             accept-flake-config = true
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 3224ba8..5e45e5f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
-      - uses: cachix/install-nix-action@v17
+      - uses: cachix/install-nix-action@v20
         with:
           extra_nix_config: |
             accept-flake-config = true