diff --git a/gradle.properties b/gradle.properties
index 80e54f5..e2f78d4 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,3 +1,3 @@
 kotlin.code.style=official
-kotlin_version=1.7.10
+kotlin_version=1.9.21
 klint_version=10.3.0