diff --git a/CameraRoll.js b/CameraRoll.js
index 67fa508..1f5c6c2 100644
--- a/CameraRoll.js
+++ b/CameraRoll.js
@@ -71,6 +71,11 @@ var getPhotosParamChecker = createStrictShapeTypeChecker({
   * Specifies filter on asset type
   */
   assetType: ReactPropTypes.oneOf(ASSET_TYPE_OPTIONS),
+
+  /**
+   * Filter by mimetype (e.g. image/jpeg).
+   */
+  mimeTypes: ReactPropTypes.arrayOf(ReactPropTypes.string),
 });
 
 /**