diff --git a/crates/rustdoc/src/store.rs b/crates/rustdoc/src/store.rs
index 50ebf83510f3db4880180776a7e1462eff3acfd1..56859144ff6f2b9114476ee454f73d04708d0027 100644
--- a/crates/rustdoc/src/store.rs
+++ b/crates/rustdoc/src/store.rs
@@ -89,6 +89,10 @@ impl RustdocStore {
         crate_name: CrateName,
         provider: Box<dyn RustdocProvider + Send + Sync + 'static>,
     ) -> Shared<Task<Result<(), Arc<anyhow::Error>>>> {
+        if let Some(existing_task) = self.indexing_tasks_by_crate.read().get(&crate_name) {
+            return existing_task.clone();
+        }
+
         let indexing_task = self
             .executor
             .spawn({