diff --git a/build.gradle b/build.gradle
index 979c7f0ce33c510436f0e10b56f0d2d7c53a680c..2572831b08256fa550ef4ceefd5cfe5c0348e691 100644
--- a/build.gradle
+++ b/build.gradle
@@ -15,7 +15,7 @@
  */
 
 task wrapper(type: Wrapper) {
-  gradleVersion = '1.11'
+  gradleVersion = '2.2.1'
 }
 
 buildscript {
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
index 667288ad6c2b3b87c990ece1267e56f0bcbf3622..3c7abdf12790879c06b07176de29647f77aa4129 100644
Binary files a/gradle/wrapper/gradle-wrapper.jar and b/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 2597ea74b941961b49a9d6cf0a2be2a55c59035a..1e1b11a32ede07b97b533af91a89f6f8546bec18 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
-#Wed Mar 19 17:30:42 KST 2014
+#Wed Feb 11 20:39:17 KST 2015
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=http\://services.gradle.org/distributions/gradle-1.11-bin.zip
+distributionUrl=http\://services.gradle.org/distributions/gradle-2.2.1-all.zip