diff --git a/samples/multiplatform/build.gradle.kts b/samples/multiplatform/build.gradle.kts
index 558f04c17..6b4b7a927 100644
--- a/samples/multiplatform/build.gradle.kts
+++ b/samples/multiplatform/build.gradle.kts
@@ -9,7 +9,7 @@ val atriumVersion = "0.16.0"
 val junitVersion = "5.7.2"
 
 plugins {
-    kotlin("multiplatform") version "1.5.20"
+    kotlin("multiplatform") version "1.5.21"
 }
 
 group = "org.atriumlib.samples"