diff --git a/build.gradle b/build.gradle
index bc14e7238..b2e5c5bb9 100644
--- a/build.gradle
+++ b/build.gradle
@@ -140,7 +140,7 @@ dependencies {
 
     testImplementation 'org.reactivestreams:reactive-streams-tck:' + reactiveStreamsVersion
     testImplementation "io.reactivex.rxjava2:rxjava:2.2.21"
-    testImplementation "io.projectreactor:reactor-core:3.7.8"
+    testImplementation "io.projectreactor:reactor-core:3.7.9"
 
     testImplementation 'org.testng:testng:7.11.0' // use for reactive streams test inheritance
     testImplementation "com.tngtech.archunit:archunit-junit5:1.4.1"