diff --git a/src/main/java/ru/dbotthepony/mc/otm/OverdriveThatMatters.java b/src/main/java/ru/dbotthepony/mc/otm/OverdriveThatMatters.java
index 4102cf615..cbb6c61c9 100644
--- a/src/main/java/ru/dbotthepony/mc/otm/OverdriveThatMatters.java
+++ b/src/main/java/ru/dbotthepony/mc/otm/OverdriveThatMatters.java
@@ -89,8 +89,8 @@ public final class OverdriveThatMatters {
 	}
 
 	private static void checkIfKotlinIsInstalled() {
-		if (!KotlinVersion.CURRENT.isAtLeast(1, 8, 0)) {
-			throw new UnsupportedClassVersionError("Installed kotlin version is " + KotlinVersion.CURRENT + ", when at least 1.8.0 is required.");
+		if (!KotlinVersion.CURRENT.isAtLeast(1, 9, 0)) {
+			throw new UnsupportedClassVersionError("Installed kotlin version is " + KotlinVersion.CURRENT + ", when at least 1.9.0 is required.");
 		}
 	}