diff --git a/common/build.gradle b/common/build.gradle
index 542e132..6301891 100644
--- a/common/build.gradle
+++ b/common/build.gradle
@@ -19,6 +19,6 @@ dependencies {
 
     implementation 'org.mortbay.jetty.alpn:alpn-boot:8.1.13.v20181017'
     
-    testImplementation 'org.assertj:assertj-core:3.17.2'
+    testImplementation 'org.assertj:assertj-core:3.18.1'
     testImplementation 'junit:junit:4.13'
 }