diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 31ebe9b..929d32a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -8,7 +8,7 @@ jobs:
   format:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
     - uses: DeterminateSystems/determinate-nix-action@main
     - uses: DeterminateSystems/flakehub-cache-action@main
     - name: Check rustfmt
@@ -17,7 +17,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
     - uses: DeterminateSystems/determinate-nix-action@main
     - uses: DeterminateSystems/flakehub-cache-action@main
     - name: Build
@@ -26,7 +26,7 @@ jobs:
   NixFlakeCheck:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
     - uses: DeterminateSystems/flake-checker-action@main
       with:
         fail-mode: false
@@ -34,7 +34,7 @@ jobs:
   NixFormatting:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
       with:
         fetch-depth: 0
     - uses: DeterminateSystems/determinate-nix-action@main
@@ -45,7 +45,7 @@ jobs:
   EditorConfig:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           fetch-depth: 0
       - uses: greut/eclint-action@v0
@@ -53,7 +53,7 @@ jobs:
   ValidateJsonSchema:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
       with:
         fetch-depth: 0
     - uses: DeterminateSystems/determinate-nix-action@main
@@ -66,7 +66,7 @@ jobs:
   SynthesizeIntegration:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
       with:
         fetch-depth: 0
     - uses: DeterminateSystems/determinate-nix-action@main
diff --git a/.github/workflows/json-schema.yaml b/.github/workflows/json-schema.yaml
index 3c30048..facc914 100644
--- a/.github/workflows/json-schema.yaml
+++ b/.github/workflows/json-schema.yaml
@@ -15,7 +15,7 @@ jobs:
       pages: write
       id-token: write
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v5
       with:
         fetch-depth: 0
     - uses: DeterminateSystems/determinate-nix-action@main
diff --git a/.github/workflows/update-flake-lock.yaml b/.github/workflows/update-flake-lock.yaml
index c4e7fd0..1fe2a9a 100644
--- a/.github/workflows/update-flake-lock.yaml
+++ b/.github/workflows/update-flake-lock.yaml
@@ -9,7 +9,7 @@ jobs:
   lockfile:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: DeterminateSystems/determinate-nix-action@main
       - uses: DeterminateSystems/flakehub-cache-action@main
       - uses: DeterminateSystems/update-flake-lock@main
diff --git a/.github/workflows/update.yml b/.github/workflows/update.yml
index 3b2c5ea..cd49789 100644
--- a/.github/workflows/update.yml
+++ b/.github/workflows/update.yml
@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: Check flake
         uses: DeterminateSystems/flake-checker-action@main
         with: