diff --git a/buildSrc/build.gradle b/buildSrc/build.gradle
index 3098f5ec74..7d08f8fd30 100644
--- a/buildSrc/build.gradle
+++ b/buildSrc/build.gradle
@@ -87,7 +87,7 @@ dependencies {
 	implementation localGroovy()
 
 	implementation 'io.github.gradle-nexus:publish-plugin:1.1.0'
-	implementation 'io.projectreactor:reactor-core:3.5.0-M4'
+	implementation 'io.projectreactor:reactor-core:3.5.0-M6'
 	implementation 'gradle.plugin.org.gretty:gretty:3.0.1'
 	implementation 'com.apollographql.apollo:apollo-runtime:2.4.5'
 	implementation 'com.github.ben-manes:gradle-versions-plugin:0.38.0'