diff --git a/gradle.properties b/gradle.properties
index 3269b87..85b9e2b 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,5 +1,5 @@
 ktor_version=2.3.1
-kotlin_version=1.8.21
+kotlin_version=1.9.0
 logback_version=1.4.6
 kotlin.code.style=official
 postgres_version=42.6.0