diff --git a/.github/workflows/check-lock.yml b/.github/workflows/check-lock.yml
new file mode 100644
index 00000000..805b0f3c
--- /dev/null
+++ b/.github/workflows/check-lock.yml
@@ -0,0 +1,25 @@
+name: Check uv.lock
+
+on:
+  pull_request:
+    paths:
+      - "pyproject.toml"
+      - "uv.lock"
+  push:
+    paths:
+      - "pyproject.toml"
+      - "uv.lock"
+
+jobs:
+  check-lock:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install uv
+        run: |
+          curl -LsSf https://astral.sh/uv/install.sh | sh
+          echo "$HOME/.cargo/bin" >> $GITHUB_PATH
+
+      - name: Check uv.lock is up to date
+        run: uv lock --check
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index d75de49e..4fd4befe 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -13,3 +13,12 @@ repos:
       - id: ruff-format
       - id: ruff
         args: [--fix, --exit-non-zero-on-fix]
+
+  - repo: local
+    hooks:
+      - id: uv-lock-check
+        name: Check uv.lock is up to date
+        entry: uv lock --check
+        language: system
+        files: ^(pyproject\.toml|uv\.lock)$
+        pass_filenames: false