diff --git a/types/marked/index.d.ts b/types/marked/index.d.ts
index a4dc048cc8..034c0cca18 100644
--- a/types/marked/index.d.ts
+++ b/types/marked/index.d.ts
@@ -1,7 +1,8 @@
-// Type definitions for Marked 0.3
+// Type definitions for Marked 0.4
 // Project: https://github.com/chjj/marked
 // Definitions by: William Orr <https://github.com/worr>
 //                 BendingBender <https://github.com/BendingBender>
+//                 CrossR <https://github.com/CrossR>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
 export as namespace marked;
@@ -202,21 +203,9 @@ declare namespace marked {
 
     interface MarkedOptions {
         /**
-         * Type: object Default: new Renderer()
-         *
-         * An object containing functions to render tokens to HTML.
+         * A prefix URL for any relative link.
          */
-        renderer?: Renderer;
-
-        /**
-         * Enable GitHub flavored markdown.
-         */
-        gfm?: boolean;
-
-        /**
-         * Enable GFM tables. This option requires the gfm option to be true.
-         */
-        tables?: boolean;
+        baseUrl?: string;
 
         /**
          * Enable GFM line breaks. This option requires the gfm option to be true.
@@ -224,34 +213,19 @@ declare namespace marked {
         breaks?: boolean;
 
         /**
-         * Conform to obscure parts of markdown.pl as much as possible. Don't fix any of the original markdown bugs or poor behavior.
+         * Enable GitHub flavored markdown.
          */
-        pedantic?: boolean;
+        gfm?: boolean;
 
         /**
-         * Sanitize the output. Ignore any HTML that has been input.
+         * Include an id attribute when emitting headings.
          */
-        sanitize?: boolean;
+        headerIds?: boolean;
 
         /**
-         * Optionally sanitize found HTML with a sanitizer function.
+         * Set the prefix for header tag ids.
          */
-        sanitizer?(html: string): string;
-
-        /**
-         * Mangle autolinks (<email@domain.com>).
-         */
-        mangle?: boolean;
-
-        /**
-         * Use smarter list behavior than the original markdown. May eventually be default with the old behavior moved into pedantic.
-         */
-        smartLists?: boolean;
-
-        /**
-         * Shows an HTML error message when rendering fails.
-         */
-        silent?: boolean;
+        headerPrefix?: string;
 
         /**
          * A function to highlight code blocks. The function takes three arguments: code, lang, and callback.
@@ -263,15 +237,52 @@ declare namespace marked {
          */
         langPrefix?: string;
 
+        /**
+         * Mangle autolinks (<email@domain.com>).
+         */
+        mangle?: boolean;
+
+        /**
+         * Conform to obscure parts of markdown.pl as much as possible. Don't fix any of the original markdown bugs or poor behavior.
+         */
+        pedantic?: boolean;
+
+        /**
+         * Type: object Default: new Renderer()
+         *
+         * An object containing functions to render tokens to HTML.
+         */
+        renderer?: Renderer;
+
+        /**
+         * Sanitize the output. Ignore any HTML that has been input.
+         */
+        sanitize?: boolean;
+
+        /**
+         * Optionally sanitize found HTML with a sanitizer function.
+         */
+        sanitizer?(html: string): string;
+
+        /**
+         * Shows an HTML error message when rendering fails.
+         */
+        silent?: boolean;
+
+        /**
+         * Use smarter list behavior than the original markdown. May eventually be default with the old behavior moved into pedantic.
+         */
+        smartLists?: boolean;
+
         /**
          * Use "smart" typograhic punctuation for things like quotes and dashes.
          */
         smartypants?: boolean;
 
         /**
-         * Set the prefix for header tag ids.
+         * Enable GFM tables. This option requires the gfm option to be true.
          */
-        headerPrefix?: string;
+        tables?: boolean;
 
         /**
          * Generate closing slash for self-closing tags (<br/> instead of <br>)
diff --git a/types/marked/marked-tests.ts b/types/marked/marked-tests.ts
index 9499de3a56..8a80f2966c 100644
--- a/types/marked/marked-tests.ts
+++ b/types/marked/marked-tests.ts
@@ -1,6 +1,7 @@
 import * as marked from 'marked';
 
 const options: marked.MarkedOptions = {
+    baseUrl: '',
     gfm: true,
     tables: true,
     breaks: false,
@@ -16,23 +17,24 @@ const options: marked.MarkedOptions = {
     renderer: new marked.Renderer()
 };
 
-function callback() {
-    console.log('callback called');
+function callback(err: string, markdown: string) {
+    console.log("Callback called!");
+    return markdown
 }
 
 const myOldMarked: typeof marked = marked.setOptions(options);
 
-console.log(marked('i am using __markdown__.'));
-console.log(marked('i am using __markdown__.', options));
-console.log(marked('i am using __markdown__.', callback));
-console.log(marked('i am using __markdown__.', options, callback));
+console.log(marked('1) I am using __markdown__.'));
+console.log(marked('2) I am using __markdown__.', options));
+console.log(marked('3) I am using __markdown__.', callback));
+console.log(marked('4) I am using __markdown__.', options, callback));
 
-console.log(marked.parse('i am using __markdown__.'));
-console.log(marked.parse('i am using __markdown__.', options));
-console.log(marked.parse('i am using __markdown__.', callback));
-console.log(marked.parse('i am using __markdown__.', options, callback));
+console.log(marked.parse('5) I am using __markdown__.'));
+console.log(marked.parse('6) I am using __markdown__.', options));
+console.log(marked.parse('7) I am using __markdown__.', callback));
+console.log(marked.parse('8) I am using __markdown__.', options, callback));
 
-const text = 'something';
+const text = 'Something';
 const tokens: marked.TokensList = marked.lexer(text, options);
 console.log(marked.parser(tokens));