diff --git a/.travis.yml b/.travis.yml
index dedfc07..9443e0a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,6 +1,5 @@
 sudo: false
 language: node_js
 node_js:
-  - 'iojs'
-  - '0.12'
-  - '0.10'
+  - '6'
+  - '8'
diff --git a/index.js b/index.js
index 4579483..6672d2a 100644
--- a/index.js
+++ b/index.js
@@ -4,6 +4,6 @@ module.exports = function rgbRegex(options) {
   options = options || {};
 
   return options.exact ?
-    /^rgb\((\d{1,3}),\s*(\d{1,3}),\s*(\d{1,3})\)$/ :
-    /rgb\((\d{1,3}),\s*(\d{1,3}),\s*(\d{1,3})\)/ig;
+    /^rgb\((\d{1,3}%?),\s*(\d{1,3}%?),\s*(\d{1,3}%?)\)$/ :
+    /rgb\((\d{1,3}%?),\s*(\d{1,3}%?),\s*(\d{1,3}%?)\)/ig;
 }
diff --git a/test/test.js b/test/test.js
index 8fa0aca..3871dc9 100644
--- a/test/test.js
+++ b/test/test.js
@@ -3,11 +3,13 @@ var rgbRegex = require('..');
 
 var rgbStrings = [
   'rgb(12,34,56)',
+  'rgb(50%,50%,50%)',
   'rgb(255, 255,      255)',
   'rgb(1,   1,1)'
 ];
 
 var inexactRgbStrings = [
+  'rgb(%,%,%)',
   'rgb(,,)',
   'rGb(12,34,56)',
   'rgb(12, 34, 200) ',