diff --git a/docs/pages/material-ui/api/tab-context.json b/docs/pages/material-ui/api/tab-context.json
index 165bbe9cb41145..9a6e0b870f4894 100644
--- a/docs/pages/material-ui/api/tab-context.json
+++ b/docs/pages/material-ui/api/tab-context.json
@@ -1,6 +1,9 @@
 {
   "props": {
-    "value": { "type": { "name": "string" }, "required": true },
+    "value": {
+      "type": { "name": "union", "description": "number<br>&#124;&nbsp;string" },
+      "required": true
+    },
     "children": { "type": { "name": "node" } }
   },
   "name": "TabContext",
diff --git a/packages/mui-lab/src/TabContext/TabContext.d.ts b/packages/mui-lab/src/TabContext/TabContext.d.ts
index f37f7c88a3f22e..b3db92467f8936 100644
--- a/packages/mui-lab/src/TabContext/TabContext.d.ts
+++ b/packages/mui-lab/src/TabContext/TabContext.d.ts
@@ -13,7 +13,7 @@ export interface TabContextProps {
   /**
    * The value of the currently selected `Tab`.
    */
-  value: string;
+  value: string | number;
 }
 /**
  *
diff --git a/packages/mui-lab/src/TabContext/TabContext.js b/packages/mui-lab/src/TabContext/TabContext.js
index c4332280d7bc4d..a910236bab70b1 100644
--- a/packages/mui-lab/src/TabContext/TabContext.js
+++ b/packages/mui-lab/src/TabContext/TabContext.js
@@ -41,7 +41,7 @@ TabContext.propTypes /* remove-proptypes */ = {
   /**
    * The value of the currently selected `Tab`.
    */
-  value: PropTypes.string.isRequired,
+  value: PropTypes.oneOfType([PropTypes.number, PropTypes.string]).isRequired,
 };
 
 /**