diff --git a/librarian.yaml b/librarian.yaml
index d639dd38eb..59d9b3f15e 100644
--- a/librarian.yaml
+++ b/librarian.yaml
@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 language: rust
-version: v0.40.1-0.20260904230940-45d06df00775
+version: v0.42.0
 repo: googleapis/google-cloud-rust
 sources:
   conformance: