diff --git a/build.gradle b/build.gradle
index 162f41aa..c235c31f 100644
--- a/build.gradle
+++ b/build.gradle
@@ -76,7 +76,7 @@ subprojects { subproject ->
 	}
 
 	ext {
-		assertjVersion = '3.3.0'
+		assertjVersion = '3.4.1'
 		hamcrestVersion = '1.3'
 		jacksonVersion = '2.6.5'
 		junitVersion = '4.12'
@@ -113,7 +113,7 @@ subprojects { subproject ->
 
 	checkstyle {
 		configFile = new File(rootDir, "src/checkstyle/checkstyle.xml")
-		toolVersion = "6.16.1"
+		toolVersion = "6.19"
 	}
 
 	jacocoTestReport {