diff --git a/packages/ra-core/src/types.ts b/packages/ra-core/src/types.ts
index 3486a27a6ca..de01994f0f5 100644
--- a/packages/ra-core/src/types.ts
+++ b/packages/ra-core/src/types.ts
@@ -173,9 +173,9 @@ export interface GetManyReferenceResult<RecordType = Record> {
     validUntil?: ValidUntil;
 }
 
-export interface UpdateParams {
+export interface UpdateParams<T = any> {
     id: Identifier;
-    data: any;
+    data: T;
     previousData: Record;
 }
 export interface UpdateResult<RecordType = Record> {
@@ -183,17 +183,17 @@ export interface UpdateResult<RecordType = Record> {
     validUntil?: ValidUntil;
 }
 
-export interface UpdateManyParams {
+export interface UpdateManyParams<T = any> {
     ids: Identifier[];
-    data: any;
+    data: T;
 }
 export interface UpdateManyResult {
     data?: Identifier[];
     validUntil?: ValidUntil;
 }
 
-export interface CreateParams {
-    data: any;
+export interface CreateParams<T = any> {
+    data: T;
 }
 export interface CreateResult<RecordType = Record> {
     data: RecordType;