diff --git a/bootstrap.datepicker/bootstrap.datepicker.d.ts b/bootstrap.datepicker/bootstrap.datepicker.d.ts
index 9be7bccc2..4cf27ef19 100644
--- a/bootstrap.datepicker/bootstrap.datepicker.d.ts
+++ b/bootstrap.datepicker/bootstrap.datepicker.d.ts
@@ -1,4 +1,4 @@
-// Type definitions for bootstrap.datepicker
+// Type definitions for bootstrap.datepicker
 // Project: https://github.com/eternicode/bootstrap-datepicker
 // Definitions by: Boris Yankov <https://github.com/borisyankov/>
 // Definitions: https://github.com/borisyankov/DefinitelyTyped
@@ -24,4 +24,10 @@ interface JQuery {
     datepicker(methodName: string): JQuery;
     datepicker(methodName: string, params: any): JQuery;
     datepicker(options: DatepickerOptions): JQuery;
-}
\ No newline at end of file
+
+    off(events?: "changeDate", selector?: any, handler?: (eventObject: any) => any): JQuery;
+
+    on(events: "changeDate", selector?: string, data?: any, handler?: (eventObject: any) => any): JQuery;
+    on(events: "changeDate", selector?: string, handler?: (eventObject: any) => any): JQuery;
+    on(events: "changeDate", handler?: (eventObject: any) => any): JQuery;
+}
diff --git a/jquery/jquery.d.ts b/jquery/jquery.d.ts
index 10c5cb979..332ee75da 100644
--- a/jquery/jquery.d.ts
+++ b/jquery/jquery.d.ts
@@ -616,6 +616,7 @@ interface JQuery {
 
     on(events: string, selector?: string, data?: any, handler?: (eventObject: JQueryEventObject) => any): JQuery;
     on(events: string, selector?: string, handler?: (eventObject: JQueryEventObject) => any): JQuery;
+    on(events: string, handler?: (eventObject: JQueryEventObject) => any): JQuery;
     on(eventsMap: { [key: string]: any; }, selector?: any, data?: any): JQuery;
 
     one(events: string, selector?: any, data?: any, handler?: (eventObject: JQueryEventObject) => any): JQuery;
diff --git a/select2/select2.d.ts b/select2/select2.d.ts
index 886ae6d34..d18a3924f 100644
--- a/select2/select2.d.ts
+++ b/select2/select2.d.ts
@@ -71,7 +71,19 @@ interface Select2Options {
     escapeMarkup?: (markup: string) => string;
 }
 
+interface Select2JQueryEventObject extends JQueryEventObject {
+    val: any;
+    added: any;
+    removed: any;
+}
+
 interface JQuery {
+    off(events?: "change", selector?: any, handler?: (eventObject: Select2JQueryEventObject) => any): JQuery;
+
+    on(events: "change", selector?: string, data?: any, handler?: (eventObject: Select2JQueryEventObject) => any): JQuery;
+    on(events: "change", selector?: string, handler?: (eventObject: Select2JQueryEventObject) => any): JQuery;
+    on(events: "change", handler?: (eventObject: Select2JQueryEventObject) => any): JQuery;
+
     select2(): JQuery;
     select2(it: IdTextPair): JQuery;
     select2(options: Select2Options): JQuery;