diff --git a/build.gradle b/build.gradle
index a08e4a0add..4f25052ab8 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,5 +1,5 @@
 buildscript {
-	ext.kotlinVersion = '1.4.32'
+	ext.kotlinVersion = '1.5.31'
 	repositories {
 		mavenCentral()
 		maven { url 'https://plugins.gradle.org/m2' }
@@ -147,7 +147,7 @@ subprojects { subproject ->
 
 	compileTestKotlin {
 		kotlinOptions {
-			jvmTarget = '1.8'
+			jvmTarget = '11'
 		}
 	}