diff --git a/.librarian/generator-input/client-post-processing/doc-formatting.yaml b/.librarian/generator-input/client-post-processing/doc-formatting.yaml
index 99f7ba46b51e..d8cc69282b96 100644
--- a/.librarian/generator-input/client-post-processing/doc-formatting.yaml
+++ b/.librarian/generator-input/client-post-processing/doc-formatting.yaml
@@ -575,4 +575,18 @@ replacements:
                   projects/{project}/locations/{location} or
                   organizations/{organization}/locations/{location}
                   or folders/{folder}/locations/{location}
-    count: 4
\ No newline at end of file
+    count: 4
+  - paths: [
+      packages/google-maps-routeoptimization/google/maps/routeoptimization_v1/types/route_optimization_service.py,
+    ]
+    before: |
+      The ratio \(vehicle_end_time - vehicle_start_time\) / \(latest_vehicle_end_time - earliest_vehicle_start_time\) for a given vehicle. If the denominator is not present, it uses \(\[ShipmentModel.global_end_time\]\[google.maps.routeoptimization.v1.ShipmentModel.global_end_time\]
+      \            ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------\n
+      \            \[ShipmentModel.global_start_time\]\[google.maps.routeoptimization.v1.ShipmentModel.global_start_time\]\)
+      \            instead.
+    after: |
+      The ratio (vehicle_end_time - vehicle_start_time) / (latest_vehicle_end_time - earliest_vehicle_start_time) for a given vehicle. If the denominator is not present, it uses
+                  ([ShipmentModel.global_end_time][google.maps.routeoptimization.v1.ShipmentModel.global_end_time] -
+                  [ShipmentModel.global_start_time][google.maps.routeoptimization.v1.ShipmentModel.global_start_time])
+                  instead.
+    count: 1