diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index 8c4391f..b6a2717 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -13,9 +13,9 @@ jobs:
   check:
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: DeterminateSystems/nix-installer-action@v9
-      - uses: DeterminateSystems/magic-nix-cache-action@v2
+      - uses: DeterminateSystems/magic-nix-cache-action@v3
       - name: Run `nix flake check`
         run: nix flake check
   lockfile:
@@ -23,7 +23,7 @@ jobs:
     if: ${{ github.event_name == 'schedule' }} # only run when scheduled
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: DeterminateSystems/nix-installer-action@v9
       - uses: DeterminateSystems/update-flake-lock@v20
       - name: Run `nix flake check`
diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index 2a83722..7c22adf 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -9,9 +9,9 @@ jobs:
   build-website:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: DeterminateSystems/nix-installer-action@v9
-    - uses: DeterminateSystems/magic-nix-cache-action@v2
+    - uses: DeterminateSystems/magic-nix-cache-action@v3
     - name: Build documentation
       run: nix build .#docs --print-build-logs
     - name: Upload artifact