diff --git a/kofu-reactive-mongo/pom.xml b/kofu-reactive-mongo/pom.xml
index ba34ae3..5e46d5a 100644
--- a/kofu-reactive-mongo/pom.xml
+++ b/kofu-reactive-mongo/pom.xml
@@ -17,7 +17,7 @@
 
     <properties>
         <java.version>17</java.version>
-        <kotlin.version>1.8.22</kotlin.version>
+        <kotlin.version>1.9.0</kotlin.version>
         <spring-fu.version>0.5.1</spring-fu.version>
     </properties>