diff --git a/pom.xml b/pom.xml
index a9894e2..451e794 100644
--- a/pom.xml
+++ b/pom.xml
@@ -76,9 +76,9 @@
 		<mockito.version>2.7.22</mockito.version>
 		<mongo.version>3.4.2</mongo.version>
 		<mongo-reactivestreams.version>1.5.0</mongo-reactivestreams.version>
-		<reactor.version>Bismuth-M3</reactor.version>
+		<reactor.version>Bismuth-M4</reactor.version>
 		<spring.version>5.0.0.RC4</spring.version>
-		<spring-data.version>Kay-RC2</spring-data.version>
+		<spring-data.version>Kay-RC3</spring-data.version>
 		<spring-security.version>5.0.0.M3</spring-security.version>
 		<spring-session.version>2.0.0.BUILD-SNAPSHOT</spring-session.version>
 	</properties>