diff --git a/doc/source/persistence.rst b/doc/source/persistence.rst
index 153018b6..9cb99896 100644
--- a/doc/source/persistence.rst
+++ b/doc/source/persistence.rst
@@ -283,7 +283,7 @@ Hierarchy
 =========
 
 .. inheritance-diagram::
-    taskflow.persistence.backends.base
+    taskflow.persistence.base
     taskflow.persistence.backends.impl_dir
     taskflow.persistence.backends.impl_memory
     taskflow.persistence.backends.impl_sqlalchemy