diff --git a/library/build.gradle b/library/build.gradle
index e56ac488..8931b66b 100644
--- a/library/build.gradle
+++ b/library/build.gradle
@@ -15,7 +15,7 @@ repositories {
 
 dependencies {
   compile 'com.android.support:support-v4:19.1.0'
-  compile 'com.android.support:appcompat-v7:21.0.+'
+  compile 'com.android.support:appcompat-v7:21.0.0'
   compile 'com.nineoldandroids:library:2.4.0'
 }