diff --git a/gravatar/gravatar-tests.ts b/gravatar/gravatar-tests.ts
new file mode 100644
index 000000000..d0edb4e64
--- /dev/null
+++ b/gravatar/gravatar-tests.ts
@@ -0,0 +1,14 @@
+/// <reference path="gravatar.d.ts" />
+
+import gravatar = require('gravatar');
+
+gravatar.url("email@example.com");
+gravatar.url("email@example.com", { s: "200", r: "pg", d: "404" });
+gravatar.url("email@example.com", { size: "200", r: "pg", d: "404" });
+gravatar.url("email@example.com", { s: "200" });
+gravatar.url("email@example.com", { default: "404" });
+gravatar.url("email@example.com", { s: "200", rating: "pg", d: "404" }, true);
+gravatar.url("email@example.com", { s: "200", r: "pg", default: "404" }, false);
+gravatar.url("email@example.com", { d: "404" }, false);
+gravatar.url("email@example.com", { forcedefault: "y" }, false);
+gravatar.url("email@example.com", { f: "y" });
diff --git a/gravatar/gravatar.d.ts b/gravatar/gravatar.d.ts
new file mode 100644
index 000000000..42ef46bb6
--- /dev/null
+++ b/gravatar/gravatar.d.ts
@@ -0,0 +1,23 @@
+// Type definitions for gravatar v1.4.0
+// Project: https://github.com/emerleite/node-gravatar
+// Definitions by: Denis Sokolov <https://github.com/denis-sokolov>
+// Definitions: https://github.com/borisyankov/DefinitelyTyped
+
+declare module GravatarModule {
+  type Options = {
+    d?: string
+    default?: string
+    f?: string
+    forcedefault?: string
+    r?: string
+    rating?: string
+    s?: string
+    size?: string
+  }
+
+  function url(email: string, options?: Options, forceProtocol?: boolean): string;
+}
+
+declare module "gravatar" {
+    export = GravatarModule;
+}