diff --git a/versions.properties b/versions.properties
index 53a0b5d..2aff9d4 100644
--- a/versions.properties
+++ b/versions.properties
@@ -25,8 +25,7 @@ version.io.gitlab.arturbosch.detekt..detekt-formatting=1.17.1
 version.kotest=4.6.1
 ## # available=4.6.2
 
-version.kotlin=1.5.20
-## # available=1.5.21
+version.kotlin=1.5.21
 ## # available=1.5.30-M1
 ## # available=1.5.30-RC
 ## # available=1.5.30