diff --git a/build.gradle b/build.gradle
index fa1243e3ad..95b0ca9c0c 100644
--- a/build.gradle
+++ b/build.gradle
@@ -30,7 +30,7 @@ ext {
 
 	aspectjVersion       = "1.9.2"
 	freemarkerVersion    = "2.3.28"
-	groovyVersion        = "2.5.4"
+	groovyVersion        = "2.5.5"
 	hsqldbVersion        = "2.4.1"
 	jackson2Version      = "2.9.8"
 	jettyVersion         = "9.4.14.v20181114"
@@ -41,7 +41,7 @@ ext {
 	reactorVersion       = "Californium-BUILD-SNAPSHOT"
 	rxjavaVersion        = "1.3.8"
 	rxjavaAdapterVersion = "1.2.1"
-	rxjava2Version       = "2.2.4"
+	rxjava2Version       = "2.2.5"
 	slf4jVersion         = "1.7.25"	  // spring-jcl + consistent 3rd party deps
 	tiles3Version        = "3.0.8"
 	tomcatVersion        = "9.0.14"