diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 341f502..4816de8 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -9,7 +9,7 @@ jobs:
   #   runs-on: ubuntu-latest
   #   steps:
   #     - uses: actions/checkout@v3
-  #     - uses: cachix/install-nix-action@v18
+  #     - uses: cachix/install-nix-action@v20
   #     - uses: cachix/cachix-action@v12
   #       with:
   #        name: sno2wman
@@ -21,7 +21,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
-      - uses: cachix/install-nix-action@v18
+      - uses: cachix/install-nix-action@v20
       - uses: cachix/cachix-action@v12
         with:
          name: sno2wman
diff --git a/.github/workflows/gh-pages.yml b/.github/workflows/gh-pages.yml
index a3f4950..0d71c76 100644
--- a/.github/workflows/gh-pages.yml
+++ b/.github/workflows/gh-pages.yml
@@ -12,7 +12,7 @@ jobs:
     steps:
       - uses: actions/checkout@v3
       - uses: actions/configure-pages@v2
-      - uses: cachix/install-nix-action@v18
+      - uses: cachix/install-nix-action@v20
       - uses: cachix/cachix-action@v12
         with:
           name: sno2wman