diff --git a/gradle.properties b/gradle.properties
index 3c69f95a..038062c3 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,4 +1,4 @@
 ktorVersion=2.3.3-eap-714
-kotlinVersion=1.8.22
+kotlinVersion=1.9.0
 logbackVersion=1.4.8
 kotlin.code.style=official