diff --git a/examples/client/server/build.gradle.kts b/examples/client/server/build.gradle.kts
index ae41a2057a..156fb5eb5f 100644
--- a/examples/client/server/build.gradle.kts
+++ b/examples/client/server/build.gradle.kts
@@ -1,7 +1,7 @@
 plugins {
     id("org.jetbrains.kotlin.jvm") version "1.3.72"
     id("org.jetbrains.kotlin.plugin.spring") version "1.3.72"
-    id("org.springframework.boot") version "2.2.9.RELEASE"
+    id("org.springframework.boot") version "2.3.3.RELEASE"
 }
 
 repositories {
diff --git a/gradle.properties b/gradle.properties
index 50300a1778..64340c4b6e 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -18,14 +18,14 @@ kotlinJvmVersion = 1.8
 kotlinVersion = 1.3.72
 kotlinCoroutinesVersion = 1.3.8
 
-classGraphVersion = 4.8.87
+classGraphVersion = 4.8.90
 graphQLJavaVersion = 15.0
 jacksonVersion = 2.11.0
 kotlinPoetVersion = 1.6.0
 ktorVersion = 1.3.1
-reactorVersion = 3.3.6.RELEASE
+reactorVersion = 3.3.9.RELEASE
 reactorExtensionsVersion = 1.0.2.RELEASE
-springBootVersion = 2.2.9.RELEASE
+springBootVersion = 2.3.3.RELEASE
 springVersion = 5.2.8.RELEASE
 
 # test dependency versions