diff --git a/library/build.gradle b/library/build.gradle
index bbc760cf..6cc2d3b5 100644
--- a/library/build.gradle
+++ b/library/build.gradle
@@ -25,6 +25,10 @@ jacocoTestReport {
     }
 }
 
+javadoc {
+    options.encoding = 'UTF-8'
+}
+
 task fatJar(type: Jar) {
     baseName = rootProject.name + '-full'
     from { configurations.compile.collect { it.isDirectory() ? it : zipTree(it) } }