diff --git a/react/react.d.ts b/react/react.d.ts
index 2d17c2223..6173cab54 100644
--- a/react/react.d.ts
+++ b/react/react.d.ts
@@ -346,61 +346,61 @@ declare module React {
         httpEquiv?: string;
         icon?: string;
         id?: string;
-        label?: any;
-        lang?: any;
-        list?: any;
-        loop?: any;
-        max?: any;
-        maxLength?: any;
-        mediaGroup?: any;
-        method?: any;
-        min?: any;
-        multiple?: any;
-        muted?: any;
-        name?: any;
-        noValidate?: any;
-        open?: any;
-        pattern?: any;
-        placeholder?: any;
-        poster?: any;
-        preload?: any;
-        radioGroup?: any;
-        readOnly?: any;
-        rel?: any;
-        required?: any;
-        role?: any;
-        rows?: any;
-        rowSpan?: any;
-        sandbox?: any;
-        scope?: any;
-        scrollLeft?: any;
-        scrolling?: any;
-        scrollTop?: any;
-        seamless?: any;
-        selected?: any;
-        shape?: any;
-        size?: any;
-        span?: any;
-        spellCheck?: any;
-        src?: any;
-        srcDoc?: any;
-        srcSet?: any;
-        start?: any;
-        step?: any;
-        style?: any;
-        tabIndex?: any;
-        target?: any;
-        title?: any;
-        type?: any;
-        useMap?: any;
-        value?: any;
-        width?: any;
-        wmode?: any;
+        label?: string;
+        lang?: string;
+        list?: string;
+        loop?: boolean;
+        max?: any; // number | string
+        maxLength?: number;
+        mediaGroup?: string;
+        method?: string;
+        min?: any; // number | string
+        multiple?: boolean;
+        muted?: boolean;
+        name?: string;
+        noValidate?: boolean;
+        open?: boolean;
+        pattern?: string;
+        placeholder?: string;
+        poster?: string;
+        preload?: string;
+        radioGroup?: string;
+        readOnly?: boolean;
+        rel?: string;
+        required?: boolean;
+        role?: string;
+        rows?: number;
+        rowSpan?: number;
+        sandbox?: string;
+        scope?: string;
+        scrollLeft?: number;
+        scrolling?: string;
+        scrollTop?: number;
+        seamless?: boolean;
+        selected?: boolean;
+        shape?: string;
+        size?: number;
+        span?: number;
+        spellCheck?: boolean;
+        src?: string;
+        srcDoc?: string;
+        srcSet?: string;
+        start?: number;
+        step?: any; // number | string
+        style?: string;
+        tabIndex?: number;
+        target?: string;
+        title?: string;
+        type?: string;
+        useMap?: string;
+        value?: string;
+        width?: any; // number | string
+        wmode?: string;
 
         // Non-standard Attributes
         autoCapitalize?: boolean;
         autoCorrect?: boolean;
-        property?: any;
+        property?: string;
         itemProp?: string;
         itemScope?: boolean;
         itemType?: string;