diff --git a/build.gradle b/build.gradle
index 84aa4c4..99954c3 100644
--- a/build.gradle
+++ b/build.gradle
@@ -3,12 +3,12 @@ plugins {
     id 'idea'
     id 'checkstyle'
     id 'pmd'
-    id 'org.jetbrains.intellij.platform' version '2.2.0'
+    id 'org.jetbrains.intellij.platform' version '2.2.1'
     id 'org.sonarqube' version '6.0.1.5171'
 }
 
 ext {
-    checkstyleVersion = '10.20.2'
+    checkstyleVersion = '10.21.0'
     pmdVersion = '7.8.0'
 }