diff --git a/gradle.properties b/gradle.properties
index f636ca8c5..bb2c00ccd 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -8,7 +8,7 @@ micronautTestVersion=4.0.0-SNAPSHOT
 
 groovyVersion=4.0.6
 spockVersion=2.3-groovy-4.0
-kotlinVersion=1.7.20
+kotlinVersion=1.7.21
 
 title=Micronaut Servlet
 projectDesc=Provides integration between Micronaut and the Servlet API