diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 988882e..76f1a7a 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -14,7 +14,7 @@ jobs:
           package-name: purs-eval
       - uses: actions/checkout@v3
         if: ${{ steps.release.outputs.release_created }}
-      - uses: cachix/install-nix-action@v19
+      - uses: cachix/install-nix-action@v20
         if: ${{ steps.release.outputs.release_created }}
         with:
           extra_nix_config: |
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 5ac4017..642385a 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -6,7 +6,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v3
-    - uses: cachix/install-nix-action@v19
+    - uses: cachix/install-nix-action@v20
       with:
         extra_nix_config: |
           access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/update-flake-lock.yml b/.github/workflows/update-flake-lock.yml
index 6248352..397742b 100644
--- a/.github/workflows/update-flake-lock.yml
+++ b/.github/workflows/update-flake-lock.yml
@@ -11,7 +11,7 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v3
       - name: Install Nix
-        uses: cachix/install-nix-action@v19
+        uses: cachix/install-nix-action@v20
         with:
           extra_nix_config: |
             access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}