diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 417ca51..009960d 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -3,5 +3,5 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.0-all.zip
-distributionSha256Sum=a0af75d3d35799a90f56255a24de69c53cd9aea90f0b532586c8f818668e1734
+distributionUrl=https://services.gradle.org/distributions/gradle-4.2.1-all.zip
+distributionSha256Sum=7897b59fb45148cd8a79f078e5e4cef3861a252dd1a1af729d0c6e8a0a8703a8