diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5af70e6418..a1f6158001 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -69,6 +69,11 @@ of `]` in links titles
 
 ### 0.12.6 Libraries updates
 
+* `kotlin` version `1.3.21` -> `1.3.30`
+* `kotlin coroutines` version `1.1.1` -> `1.2.0`
+* `kotlin serialization` version `0.10.0` -> `0.11.0`
+* `ktor` version `1.1.2` -> `1.1.3`
+
 ## 0.11.0
 
 * Kotlin `1.3.11` -> `1.3.21`
diff --git a/gradle.properties b/gradle.properties
index 20f62f9d7f..43c7278bdd 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,9 +1,9 @@
 kotlin.code.style=official
-kotlin_version=1.3.21
-kotlin_coroutines_version=1.1.1
-kotlin_serialisation_runtime_version=0.10.0
+kotlin_version=1.3.30
+kotlin_coroutines_version=1.2.0
+kotlin_serialisation_runtime_version=0.11.0
 joda_time_version=2.10.1
-ktor_version=1.1.2
+ktor_version=1.1.3
 
 gradle_bintray_plugin_version=1.8.4