diff --git a/src/lib/isIPRange.js b/src/lib/isIPRange.js
index ffb4e1afa..ff6c8b85b 100644
--- a/src/lib/isIPRange.js
+++ b/src/lib/isIPRange.js
@@ -21,5 +21,6 @@ export default function isIPRange(str) {
     return false;
   }
 
-  return isIP(parts[0], 4) && parts[1] <= 32 && parts[1] >= 0;
+  return (isIP(parts[0], 4) && parts[1] <= 32 && parts[1] >= 0) ||
+          (isIP(parts[0], 6) && parts[1] <= 64 && parts[1] >= 0);
 }
diff --git a/test/validators.js b/test/validators.js
index baeca631a..f6528cd0d 100644
--- a/test/validators.js
+++ b/test/validators.js
@@ -870,18 +870,26 @@ describe('Validators', () => {
         '127.0.0.1/24',
         '0.0.0.0/0',
         '255.255.255.0/32',
+        '2001:db8::/32',
+        '2001:db8:0000:1:1:1:1:1/32',
       ],
       invalid: [
         '127.200.230.1/35',
         '127.200.230.1/-1',
         '1.1.1.1/011',
-        '::1/64',
         '1.1.1/24.1',
+        '1.1.1.1.1/24',
         '1.1.1.1/01',
         '1.1.1.1/1.1',
         '1.1.1.1/1.',
         '1.1.1.1/1/1',
         '1.1.1.1',
+        '2001:db8::/32.1',
+        '2001:db8::/01',
+        '2001:db8::/1.',
+        '2001:dby::/32',
+        '2001:db8::/-1',
+        '2001:db8::/67',
       ],
     });
   });