diff --git a/types/chroma-js/chroma-js-tests.ts b/types/chroma-js/chroma-js-tests.ts
index 463733fa5c..ddda405f6f 100644
--- a/types/chroma-js/chroma-js-tests.ts
+++ b/types/chroma-js/chroma-js-tests.ts
@@ -11,6 +11,7 @@ function test_chroma() {
     chroma.valid({});
     chroma.valid(null);
     chroma.valid(undefined);
+    chroma.valid('000', 'hex');
 
     chroma(0xff3399);
     chroma(0xff, 0x33, 0x99);
diff --git a/types/chroma-js/index.d.ts b/types/chroma-js/index.d.ts
index dd6a762836..3d4b5b92c5 100644
--- a/types/chroma-js/index.d.ts
+++ b/types/chroma-js/index.d.ts
@@ -1,4 +1,4 @@
-// Type definitions for Chroma.js 1.4
+// Type definitions for Chroma.js 2.0
 // Project: https://github.com/gka/chroma.js
 // Definitions by: Sebastian Brückner <https://github.com/invliD>, Marcin Pacholec <https://github.com/mpacholec>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
@@ -62,7 +62,7 @@ declare namespace chroma {
          */
         hex(color: string): Color;
 
-        valid(color: any): boolean;
+        valid(color: any, mode?: string): boolean;
 
         hsl(h: number, s: number, l: number): Color;