diff --git a/build.gradle b/build.gradle
index 0d2b679..750a775 100644
--- a/build.gradle
+++ b/build.gradle
@@ -33,7 +33,7 @@ dependencies {
     testImplementation 'org.glassfish:javax.json:1.1.4'
     testImplementation 'org.junit.jupiter:junit-jupiter-engine'
     testImplementation 'org.assertj:assertj-core:3.11.1'
-    testImplementation 'org.mockito:mockito-core:2.23.0'
+    testImplementation 'org.mockito:mockito-core:2.23.4'
 }
 
 test {