diff --git a/README.md b/README.md
index 3d39635..a0820cc 100644
--- a/README.md
+++ b/README.md
@@ -19,7 +19,7 @@ Add the following line to the composer.json file:
 ````
 {
     "require": {
-        "robthree/twofactorauth": "~1.0"
+        "robthree/twofactorauth": "dev-master"
     }
 }
 ````