diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index ff399b0a..09fc320c 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -18,7 +18,7 @@ jobs:
     name: Python / Lint
     runs-on: macos-14
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       # Disable jupyter-builder build hook because not needed for linting/formatting, and requires pnpm
       - run: |
           sed -i '' 's/\[tool.hatch.build.hooks.\(.*\)\]/\[_tool.hatch.build.hooks.\1\]/' pyproject.toml
@@ -31,7 +31,7 @@ jobs:
     name: Python / Typecheck
     runs-on: macos-14
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       # Disable jupyter-builder build hook because not needed for typechecking, and requires pnpm
       - run: |
           sed -i '' 's/\[tool.hatch.build.hooks.\(.*\)\]/\[_tool.hatch.build.hooks.\1\]/' pyproject.toml
@@ -51,7 +51,7 @@ jobs:
           - "3.12"
           - "3.13"
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: pnpm/action-setup@v4
         with:
           run_install: true
@@ -66,7 +66,7 @@ jobs:
     name: JavaScript / Lint
     runs-on: macos-14
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: biomejs/setup-biome@v2
       - run: biome ci .
 
@@ -74,7 +74,7 @@ jobs:
     name: JavaScript / Typecheck
     runs-on: macos-14
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: pnpm/action-setup@v4
         with:
           run_install: true
@@ -84,7 +84,7 @@ jobs:
     name: JavaScript / Test
     runs-on: macos-14
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: pnpm/action-setup@v4
         with:
           run_install: true
diff --git a/.github/workflows/jsr.yml b/.github/workflows/jsr.yml
index 3433ee10..2faea379 100644
--- a/.github/workflows/jsr.yml
+++ b/.github/workflows/jsr.yml
@@ -22,7 +22,7 @@ jobs:
       contents: read
       id-token: write
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: denoland/setup-deno@v2
         with:
           deno-version: v2.x
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 2fb34da2..381a8f44 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -21,7 +21,7 @@ jobs:
       pull-requests: write
       issues: read
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: pnpm/action-setup@v4
         with:
           run_install: true