diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1b2fdde55..69689151c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,10 @@
 # Changelog
 
+### [6.11.2](https://www.github.com/protobufjs/protobuf.js/compare/v6.11.1...v6.11.2) (2021-04-30)
+
+* regenerated index.d.ts to fix the unintended breaking change in types.
+
+
 ### [6.11.1](https://www.github.com/protobufjs/protobuf.js/compare/v6.11.0...v6.11.1) (2021-04-29)
 
 
diff --git a/index.d.ts b/index.d.ts
index 320d8a541..bbe643245 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -300,6 +300,9 @@ export class FieldBase extends ReflectionObject {
      */
     constructor(name: string, id: number, type: string, rule?: (string|{ [k: string]: any }), extend?: (string|{ [k: string]: any }), options?: { [k: string]: any }, comment?: string);
 
+    /** Field rule, if any. */
+    public rule?: string;
+
     /** Field type. */
     public type: string;