diff --git a/build.gradle b/build.gradle
index a0c939d..1392542 100644
--- a/build.gradle
+++ b/build.gradle
@@ -9,6 +9,11 @@ wrapper {
     distributionType = Wrapper.DistributionType.BIN
 }
 
+compileJava {
+    sourceCompatibility = targetCompatibility = JavaVersion.VERSION_1_8
+    options.encoding = 'UTF-8'
+}
+
 group 'ru.di9'
 version '1.9.2'