diff --git a/.github/workflows/niv-update.yml b/.github/workflows/niv-update.yml
index a14fa53c..e73f2f73 100644
--- a/.github/workflows/niv-update.yml
+++ b/.github/workflows/niv-update.yml
@@ -13,11 +13,11 @@ jobs:
       # - crate2nix
       sources: nixpkgs nix-test-runner cargo-release nixpkgs-mozilla cachix
     steps:
-      - uses: actions/checkout@v2.3.4
-      - uses: cachix/install-nix-action@v12
+      - uses: actions/checkout@v4
+      - uses: cachix/install-nix-action@v20
         with:
             nix_path: nixpkgs=channel:nixos-unstable
-      - uses: cachix/cachix-action@v10
+      - uses: cachix/cachix-action@v12
         with:
           name: eigenvalue
           signingKey: '${{ secrets.CACHIX_SIGNING_KEY }}'
diff --git a/.github/workflows/tests-nix-linux.yml b/.github/workflows/tests-nix-linux.yml
index f665c5e6..2f248bd7 100644
--- a/.github/workflows/tests-nix-linux.yml
+++ b/.github/workflows/tests-nix-linux.yml
@@ -10,11 +10,11 @@ jobs:
           - ubuntu-latest
     runs-on: ${{ matrix.platform }}
     steps:
-    - uses: actions/checkout@v2.3.4
-    - uses: cachix/install-nix-action@v12
+    - uses: actions/checkout@v4
+    - uses: cachix/install-nix-action@v20
       with:
           nix_path: nixpkgs=channel:nixos-unstable
-    - uses: cachix/cachix-action@v10
+    - uses: cachix/cachix-action@v12
       with:
         name: eigenvalue
         signingKey: '${{ secrets.CACHIX_SIGNING_KEY }}'
diff --git a/.github/workflows/tests-nix-macos.yml b/.github/workflows/tests-nix-macos.yml
index 5c8b9e28..b474b2bc 100644
--- a/.github/workflows/tests-nix-macos.yml
+++ b/.github/workflows/tests-nix-macos.yml
@@ -10,11 +10,11 @@ jobs:
           - macos-10.15
     runs-on: ${{ matrix.platform }}
     steps:
-    - uses: actions/checkout@v2.3.4
-    - uses: cachix/install-nix-action@v12
+    - uses: actions/checkout@v4
+    - uses: cachix/install-nix-action@v20
       with:
           nix_path: nixpkgs=channel:nixos-unstable
-    - uses: cachix/cachix-action@v10
+    - uses: cachix/cachix-action@v12
       with:
         name: eigenvalue
         signingKey: '${{ secrets.CACHIX_SIGNING_KEY }}'