diff --git a/benchmarks/build.gradle b/benchmarks/build.gradle
index c92ef5c6e7..105caad1e1 100644
--- a/benchmarks/build.gradle
+++ b/benchmarks/build.gradle
@@ -16,7 +16,7 @@ dependencies {
   compileOnly "com.google.code.findbugs:jsr305:${findbugsVersion}"
 
   implementation "org.openjdk.jmh:jmh-core:${jmhVersion}"
-  implementation "io.projectreactor.addons:reactor-extra:3.3.3.RELEASE", {
+  implementation "io.projectreactor.addons:reactor-extra:3.4.6", {
     exclude group: 'io.projectreactor', module: 'reactor-core'
   }
   annotationProcessor "org.openjdk.jmh:jmh-generator-annprocess:${jmhVersion}"
diff --git a/build.gradle b/build.gradle
index 14fac1c70f..940b0a604b 100644
--- a/build.gradle
+++ b/build.gradle
@@ -96,20 +96,20 @@ ext {
 
 	// Logging
 	slf4jVersion = '1.7.32'
-	logbackVersion = '1.2.5'
+	logbackVersion = '1.2.9'
 
 	// Testing
-	jUnitPlatformVersion = '5.8.0' //needs to be manually synchronized in buildSrc
+	jUnitPlatformVersion = '5.8.2' //needs to be manually synchronized in buildSrc
 	assertJVersion = '3.21.0' //needs to be manually synchronized in buildSrc
 	mockitoVersion = '3.12.4'
-	awaitilityVersion = '4.1.0'
+	awaitilityVersion = '4.1.1'
 	throwingFunctionVersion = '1.5.1'
 	javaObjectLayoutVersion = '0.16'
 	testNgVersion = '7.4.0'
-	archUnitVersion = '0.21.0'
+	archUnitVersion = '0.22.0'
 
 	// For reactor-tools
-	byteBuddyVersion = '1.11.19' //dependency, but plugin usage is now in a mock build done via TestKit
+	byteBuddyVersion = '1.12.5' //dependency, but plugin usage is now in a mock build done via TestKit
 	cgLibVersion = '3.3.0'
 
 	// JMH
diff --git a/buildSrc/build.gradle b/buildSrc/build.gradle
index 95f8526966..eeb5587cdd 100644
--- a/buildSrc/build.gradle
+++ b/buildSrc/build.gradle
@@ -25,7 +25,7 @@ repositories {
 
 dependencies {
 	testImplementation("org.assertj:assertj-core:3.21.0")
-	testImplementation platform("org.junit:junit-bom:5.8.0")
+	testImplementation platform("org.junit:junit-bom:5.8.2")
 	testImplementation "org.junit.jupiter:junit-jupiter-api"
 	testRuntimeOnly "org.junit.jupiter:junit-jupiter-engine"
 }
diff --git a/reactor-tools/src/buildPluginTest/resources/mock-gradle/build.gradle b/reactor-tools/src/buildPluginTest/resources/mock-gradle/build.gradle
index 4ef82fb863..de962f0325 100644
--- a/reactor-tools/src/buildPluginTest/resources/mock-gradle/build.gradle
+++ b/reactor-tools/src/buildPluginTest/resources/mock-gradle/build.gradle
@@ -49,7 +49,7 @@ dependencies {
 	testImplementation "org.junit.jupiter:junit-jupiter-api"
 	testRuntimeOnly "org.junit.jupiter:junit-jupiter-engine"
 
-	testImplementation "org.assertj:assertj-core:3.20.2"
+	testImplementation "org.assertj:assertj-core:3.21.0"
 }
 
 test {