diff --git a/src/chakra-components/menu.tsx b/src/chakra-components/menu.tsx
index 105705c..cad83e9 100644
--- a/src/chakra-components/menu.tsx
+++ b/src/chakra-components/menu.tsx
@@ -244,6 +244,7 @@ export const Group = <
     label,
     selectProps,
     innerProps,
+    getClassNames,
   } = props;
 
   const { chakraStyles } = selectProps;
@@ -258,6 +259,7 @@ export const Group = <
         cx={cx}
         theme={theme}
         getStyles={getStyles}
+        getClassNames={getClassNames}
       >
         {label}
       </Heading>