diff --git a/.github/workflows/pr.yml b/.github/workflows/pr.yml
index 3bc3c86bd..fbf11f365 100644
--- a/.github/workflows/pr.yml
+++ b/.github/workflows/pr.yml
@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v3
-    - uses: cachix/install-nix-action@v19
+    - uses: cachix/install-nix-action@v20
       with:
         nix_path: nixpkgs=channel:nixos-unstable
         extra_nix_config: |
diff --git a/.github/workflows/update.yml b/.github/workflows/update.yml
index 45dff4cd4..358d9b819 100644
--- a/.github/workflows/update.yml
+++ b/.github/workflows/update.yml
@@ -14,7 +14,7 @@ jobs:
     - uses: actions/checkout@v3
       with:
         fetch-depth: '0'
-    - uses: cachix/install-nix-action@v19
+    - uses: cachix/install-nix-action@v20
       with:
         nix_path: nixpkgs=channel:nixos-unstable
         extra_nix_config: |
@@ -28,7 +28,7 @@ jobs:
     needs: update_nur
     steps:
     - uses: actions/checkout@v3
-    - uses: cachix/install-nix-action@v19
+    - uses: cachix/install-nix-action@v20
       with:
         nix_path: nixpkgs=channel:nixos-unstable
         extra_nix_config: |