diff --git a/datafusion/core/src/lib.rs b/datafusion/core/src/lib.rs
index 0fc2812802d5..416b69c3afdd 100644
--- a/datafusion/core/src/lib.rs
+++ b/datafusion/core/src/lib.rs
@@ -207,6 +207,7 @@
 //! [`QueryPlanner`]: execution::context::QueryPlanner
 //! [`OptimizerRule`]: datafusion_optimizer::optimizer::OptimizerRule
 //! [`AnalyzerRule`]:  datafusion_optimizer::analyzer::AnalyzerRule
+//! [`PhysicalOptimizerRule`]: datafusion_physical_optimizer::PhysicalOptimizerRule
 //!
 //! ## Query Planning and Execution Overview
 //!