diff --git a/build.gradle b/build.gradle
index 9687dc0f0e..14fac1c70f 100644
--- a/build.gradle
+++ b/build.gradle
@@ -109,7 +109,7 @@ ext {
 	archUnitVersion = '0.21.0'
 
 	// For reactor-tools
-	byteBuddyVersion = '1.11.16' //dependency, but plugin usage is now in a mock build done via TestKit
+	byteBuddyVersion = '1.11.19' //dependency, but plugin usage is now in a mock build done via TestKit
 	cgLibVersion = '3.3.0'
 
 	// JMH