diff --git a/.github/workflows/cachix.yml b/.github/workflows/cachix.yml
index 6ed44cb8..3b1f1da5 100644
--- a/.github/workflows/cachix.yml
+++ b/.github/workflows/cachix.yml
@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2.4.0
-      - uses: cachix/install-nix-action@v15
+      - uses: cachix/install-nix-action@v16
       - name: Cachix
         uses: cachix/cachix-action@v10
         with:
diff --git a/.github/workflows/update.yml b/.github/workflows/update.yml
index 10bc8d2b..9665a1db 100644
--- a/.github/workflows/update.yml
+++ b/.github/workflows/update.yml
@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2.4.0
-      - uses: cachix/install-nix-action@v15
+      - uses: cachix/install-nix-action@v16
       - name: Cachix
         uses: cachix/cachix-action@v10
         with: