diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a4da5e99ba214980a678efef0c6d6d2e48b0f499..66a2237c298bf18f3d554cd59c16b644caa879a7 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -269,6 +269,10 @@ jobs:
           mkdir -p ./../.cargo
           cp ./.cargo/ci-config.toml ./../.cargo/config.toml
 
+      - name: Check that Cargo.lock is up to date
+        run: |
+          cargo update --frozen --workspace
+
       - name: cargo clippy
         run: ./script/clippy