diff --git a/buildSrc/build.gradle b/buildSrc/build.gradle
index 915afad4ac..1ba42b07ab 100644
--- a/buildSrc/build.gradle
+++ b/buildSrc/build.gradle
@@ -72,7 +72,7 @@ dependencies {
 	implementation localGroovy()
 
 	implementation 'io.github.gradle-nexus:publish-plugin:1.1.0'
-	implementation 'io.projectreactor:reactor-core:3.4.15'
+	implementation 'io.projectreactor:reactor-core:3.4.17'
 	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'
diff --git a/dependencies/spring-security-dependencies.gradle b/dependencies/spring-security-dependencies.gradle
index 633753192a..46ec3a1189 100644
--- a/dependencies/spring-security-dependencies.gradle
+++ b/dependencies/spring-security-dependencies.gradle
@@ -8,7 +8,7 @@ javaPlatform {
 
 dependencies {
 	api platform("org.springframework:spring-framework-bom:$springFrameworkVersion")
-	api platform("io.projectreactor:reactor-bom:2020.0.16")
+	api platform("io.projectreactor:reactor-bom:2020.0.18")
 	api platform("io.rsocket:rsocket-bom:1.1.1")
 	api platform("org.springframework.data:spring-data-bom:2021.0.9")
 	api platform("org.jetbrains.kotlin:kotlin-bom:$kotlinVersion")