diff --git a/gradle/projects.libs.versions.toml b/gradle/projects.libs.versions.toml
index 940f715d4..0412ef101 100644
--- a/gradle/projects.libs.versions.toml
+++ b/gradle/projects.libs.versions.toml
@@ -7,7 +7,7 @@ dokka = "1.8.10"
 intellijOpenApi = "7.0.3"
 javaAssist = "3.29.2-GA"
 junit = "5.9.2"
-kotlin = "1.8.21"
+kotlin = "1.9.0"
 kotlinCompileTesting = "1.5.0"
 javaCompileTesting = "0.21.0"
 kotlinBinaryCompatibilityValidator = "0.13.0"