diff --git a/gradle.properties b/gradle.properties
index 024b8eb..93fcf8e 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -4,6 +4,6 @@ org.gradle.jvmargs=-Xmx2560m
 group=org.komapper
 version=0.0.1
 
-kotlinVersion=2.2.20
+kotlinVersion=2.2.21
 komapperVersion=5.6.0
 kspVersion=1.0.29