diff --git a/types/angular/jqlite.d.ts b/types/angular/jqlite.d.ts
index a9da89cf65..ac4f8ec10c 100644
--- a/types/angular/jqlite.d.ts
+++ b/types/angular/jqlite.d.ts
@@ -774,6 +774,7 @@ interface BaseJQueryEventObject extends Event {
     pageY: number;
     /**
      * For key or mouse events, this property indicates the specific key or button that was pressed.
+     * @deprecated Use `key` for KeyEvents or `button` for MouseEvents instead.
      * @see {@link https://api.jquery.com/event.which/}
      */
     which: number;
@@ -804,9 +805,12 @@ interface JQueryMouseEventObject extends JQueryInputEventObject {
 }
 
 interface JQueryKeyEventObject extends JQueryInputEventObject {
-    char: any;
+    /** @deprecated */
+    char: string;
+    /** @deprecated */
     charCode: number;
-    key: any;
+    key: string;
+    /** @deprecated */
     keyCode: number;
 }
 
diff --git a/types/jquery/legacy.d.ts b/types/jquery/legacy.d.ts
index a3a98b936c..08c8a408f3 100644
--- a/types/jquery/legacy.d.ts
+++ b/types/jquery/legacy.d.ts
@@ -167,9 +167,12 @@ interface JQueryMouseEventObject extends JQueryInputEventObject {
  * @deprecated ​ Deprecated. Use \`{@link JQuery.Event }\`.
  */
 interface JQueryKeyEventObject extends JQueryInputEventObject {
-    char: any;
+    /** @deprecated */
+    char: string;
+    /** @deprecated */
     charCode: number;
-    key: any;
+    key: string;
+    /** @deprecated */
     keyCode: number;
 }
 /**
diff --git a/types/jquery/v1/index.d.ts b/types/jquery/v1/index.d.ts
index 8cbc9c5789..89fe87bde8 100644
--- a/types/jquery/v1/index.d.ts
+++ b/types/jquery/v1/index.d.ts
@@ -592,6 +592,7 @@ interface BaseJQueryEventObject extends Event {
     pageY: number;
     /**
      * For key or mouse events, this property indicates the specific key or button that was pressed.
+     * @deprecated Use `key` for KeyEvents or `button` for MouseEvents instead.
      * @see {@link https://api.jquery.com/event.which/}
      */
     which: number;
@@ -622,9 +623,12 @@ interface JQueryMouseEventObject extends JQueryInputEventObject {
 }
 
 interface JQueryKeyEventObject extends JQueryInputEventObject {
-    char: any;
+    /** @deprecated */
+    char: string;
+    /** @deprecated */
     charCode: number;
-    key: any;
+    key: string;
+    /** @deprecated */
     keyCode: number;
 }
 
@@ -824,7 +828,7 @@ interface JQueryStatic {
      * @see {@link https://api.jquery.com/jQuery.ajaxTransport/}
      */
     ajaxTransport(dataType: string, handler: (opts: any, originalOpts: JQueryAjaxSettings, jqXHR: JQueryXHR) => any): void;
-    
+
     ajaxSettings: JQueryAjaxSettings;
 
      /**
diff --git a/types/jquery/v2/index.d.ts b/types/jquery/v2/index.d.ts
index 1b1d9cf75f..2643960e6d 100644
--- a/types/jquery/v2/index.d.ts
+++ b/types/jquery/v2/index.d.ts
@@ -592,6 +592,7 @@ interface BaseJQueryEventObject extends Event {
     pageY: number;
     /**
      * For key or mouse events, this property indicates the specific key or button that was pressed.
+     * @deprecated Use `key` for KeyEvents or `button` for MouseEvents instead.
      * @see {@link https://api.jquery.com/event.which/}
      */
     which: number;
@@ -622,9 +623,12 @@ interface JQueryMouseEventObject extends JQueryInputEventObject {
 }
 
 interface JQueryKeyEventObject extends JQueryInputEventObject {
-    char: any;
+    /** @deprecated */
+    char: string;
+    /** @deprecated */
     charCode: number;
-    key: any;
+    key: string;
+    /** @deprecated */
     keyCode: number;
 }