Update Kotlin version to 1.2.21

diff --git a/build.gradle b/build.gradle
index d769f04..c2bb12e 100644 (file)
--- a/build.gradle
+++ b/build.gradle
@@ -2,7 +2,7 @@ group = 'net.pterodactylus'
 version = '0.9.8'
 
 buildscript {
-    ext.kotlinVersion = '1.2.20'
+    ext.kotlinVersion = '1.2.21'
     repositories {
         mavenCentral()
     }