diff --git a/example/gradle.properties b/example/gradle.properties
index 9ccadbf..7766593 100644
--- a/example/gradle.properties
+++ b/example/gradle.properties
@@ -1,2 +1,2 @@
 ktorVersion=0.9.0
-logbackVersion=1.2.1
+logbackVersion=1.2.3
diff --git a/gradle.properties b/gradle.properties
index 64885a8..bfabd23 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -5,4 +5,4 @@ dokkaVersion=0.9.14
 gradleReleaseVersion=2.6.0
 hamkrestVersion=1.4.2.0
 junitVersion=4.12
-kotlinVersion=1.2.10
+kotlinVersion=1.2.20