diff --git a/.github/workflows/nix-build.yaml b/.github/workflows/nix-build.yaml
index d70965c6..ccbef78f 100644
--- a/.github/workflows/nix-build.yaml
+++ b/.github/workflows/nix-build.yaml
@@ -18,7 +18,7 @@ jobs:
       with:
         submodules: recursive
     - name: Install nix
-      uses: cachix/install-nix-action@v19
+      uses: cachix/install-nix-action@v20
       with:
         install_url: https://nixos.org/nix/install
         extra_nix_config: |
diff --git a/.github/workflows/nix-update.yaml b/.github/workflows/nix-update.yaml
index 4f7d1d52..7bd84350 100644
--- a/.github/workflows/nix-update.yaml
+++ b/.github/workflows/nix-update.yaml
@@ -9,7 +9,7 @@ jobs:
     - name: Clone repository
       uses: actions/checkout@v3
     - name: Install nix
-      uses: cachix/install-nix-action@v19
+      uses: cachix/install-nix-action@v20
       with:
         install_url: https://nixos.org/nix/install
         extra_nix_config: |