diff --git a/build.gradle b/build.gradle
index 73c534c3c9..ca2e8a1d36 100644
--- a/build.gradle
+++ b/build.gradle
@@ -87,12 +87,12 @@ ext {
 	reactorVersion = 'Dysprosium-SR4'
 	resilience4jVersion = '1.2.0'
 	romeToolsVersion = '1.12.2'
-	rsocketVersion = '1.0.0-RC5'
+	rsocketVersion = '1.0.0-RC6'
 	servletApiVersion = '4.0.1'
 	smackVersion = '4.3.4'
 	springAmqpVersion = project.hasProperty('springAmqpVersion') ? project.springAmqpVersion : '2.2.3.RELEASE'
 	springDataVersion = project.hasProperty('springDataVersion') ? project.springDataVersion : 'Neumann-BUILD-SNAPSHOT'
-	springSecurityVersion = project.hasProperty('springSecurityVersion') ? project.springSecurityVersion : '5.3.0.BUILD-SNAPSHOT'
+	springSecurityVersion = project.hasProperty('springSecurityVersion') ? project.springSecurityVersion : '5.3.0.RC1'
 	springRetryVersion = '1.2.5.RELEASE'
 	springVersion = project.hasProperty('springVersion') ? project.springVersion : '5.2.3.RELEASE'
 	springWsVersion = '3.0.8.RELEASE'