diff --git a/crates/shared/src/http_solver.rs b/crates/shared/src/http_solver.rs
index 9d09ab04bb..45c3a3afd5 100644
--- a/crates/shared/src/http_solver.rs
+++ b/crates/shared/src/http_solver.rs
@@ -230,7 +230,9 @@ impl HttpSolverApi for DefaultHttpSolverApi {
     }
 
     fn notify_auction_result(&self, auction_id: AuctionId, result: model::AuctionResult) {
-        let mut url = crate::url::join(&self.base, "notify");
+        let mut url = crate::url::join(&self.base, &self.solve_path);
+        // `/notify` should be a sibling of the `/solve` endpoint
+        url.path_segments_mut().unwrap().pop().push("notify");
 
         let client = self.client.clone();
         let config_api_key = self.config.api_key.clone();