diff --git a/gradle/versions.gradle b/gradle/versions.gradle
index 38c5261..7034c71 100644
--- a/gradle/versions.gradle
+++ b/gradle/versions.gradle
@@ -2,19 +2,19 @@ ext.versions = [
         jetbrains: [
                 kotlin: '1.2.71',
                 spek: '1.1.2',
-                engine: '1.2.0'
+                engine: '1.2.1'
         ],
-        bytebuddy: '1.8.15',
-        klaxon: '3.0.6',
+        bytebuddy: '1.9.2',
+        klaxon: '4.0.1',
         typesafe: '1.3.3',
         jgit: '4.9.0.201710071750-r',
         expekt: '0.5.0',
         junitrunner: '1.1.0-M1',
-        snakeyaml: '1.21',
+        snakeyaml: '1.23',
         jcommander: '1.72',
         mockwebserver: '3.11.0',
-        aws: '1.11.380',
-        logging: '1.5.4'
+        aws: '1.11.438',
+        logging: '1.6.10'
 ]
 
 ext.libraries = [