diff --git a/parent/pom.xml b/parent/pom.xml
index aabd2767..0ffb5699 100644
--- a/parent/pom.xml
+++ b/parent/pom.xml
@@ -102,7 +102,7 @@
 		<lombok>1.16.18</lombok>
 		<mockito>2.8.47</mockito>
 		<querydsl>4.1.4</querydsl>
-		<reactor>Bismuth-M3</reactor>
+		<reactor>Bismuth-M4</reactor>
 		<rxjava>1.3.0</rxjava>
 		<rxjava-reactive-streams>1.2.1</rxjava-reactive-streams>
 		<rxjava2>2.1.1</rxjava2>