diff --git a/packages/x-data-grid-premium/src/hooks/features/aggregation/gridAggregationInterfaces.ts b/packages/x-data-grid-premium/src/hooks/features/aggregation/gridAggregationInterfaces.ts
index 82ecbce2fc1c..212bdef1a008 100644
--- a/packages/x-data-grid-premium/src/hooks/features/aggregation/gridAggregationInterfaces.ts
+++ b/packages/x-data-grid-premium/src/hooks/features/aggregation/gridAggregationInterfaces.ts
@@ -74,7 +74,7 @@ export interface GridAggregationFunction<V = any, AV = V> {
   getCellValue?: (params: GridAggregationGetCellValueParams) => V;
 }
 
-interface GridAggregationParams<V = any> {
+export interface GridAggregationParams<V = any> {
   values: (V | undefined)[];
   groupId: GridRowId;
   field: GridColDef['field'];
diff --git a/scripts/x-data-grid-premium.exports.json b/scripts/x-data-grid-premium.exports.json
index 9723176f8754..b3de7ed13349 100644
--- a/scripts/x-data-grid-premium.exports.json
+++ b/scripts/x-data-grid-premium.exports.json
@@ -94,6 +94,7 @@
   { "name": "gridAggregationLookupSelector", "kind": "Variable" },
   { "name": "GridAggregationModel", "kind": "TypeAlias" },
   { "name": "gridAggregationModelSelector", "kind": "Variable" },
+  { "name": "GridAggregationParams", "kind": "Interface" },
   { "name": "GridAggregationPosition", "kind": "TypeAlias" },
   { "name": "GridAggregationRule", "kind": "Interface" },
   { "name": "GridAggregationRules", "kind": "TypeAlias" },