diff --git a/build.gradle b/build.gradle
index 84425ee..af0bdeb 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,7 +1,7 @@
 buildscript {
     ext {
         atrium_version = '0.18.0'
-        kotest_version = "4.4.3"
+        kotest_version = "5.9.1"
     }
 }