diff --git a/build.gradle b/build.gradle
index f0e1d69b..31a3f8eb 100644
--- a/build.gradle
+++ b/build.gradle
@@ -113,7 +113,7 @@ subprojects { Project subproject ->
         }
 
         dependencies {
-            testImplementation "io.projectreactor:reactor-test:3.5.8"
+            testImplementation "io.projectreactor:reactor-test:3.5.9"
             testImplementation "org.codehaus.groovy:groovy-test-junit5:$groovyVersion"
             testImplementation("org.spockframework:spock-core:$spockVersion") { transitive = false}
             testImplementation "org.junit.jupiter:junit-jupiter-api:$junitJupiterVersion"