diff --git a/jmemcached-client/pom.xml b/jmemcached-client/pom.xml
index b1836bd..9f262ea 100644
--- a/jmemcached-client/pom.xml
+++ b/jmemcached-client/pom.xml
@@ -127,7 +127,7 @@
         <dependency>
             <groupId>org.mockito</groupId>
             <artifactId>mockito-core</artifactId>
-            <version>2.6.3</version>
+            <version>2.28.2</version>
             <scope>test</scope>
         </dependency>
         <dependency>
diff --git a/jmemcached-common/pom.xml b/jmemcached-common/pom.xml
index ad700d1..dbf0862 100644
--- a/jmemcached-common/pom.xml
+++ b/jmemcached-common/pom.xml
@@ -122,7 +122,7 @@
         <dependency>
             <groupId>org.mockito</groupId>
             <artifactId>mockito-core</artifactId>
-            <version>2.6.3</version>
+            <version>2.28.2</version>
             <scope>test</scope>
         </dependency>
         <dependency>
diff --git a/jmemcached-server/pom.xml b/jmemcached-server/pom.xml
index 189bbd3..5eec9c6 100644
--- a/jmemcached-server/pom.xml
+++ b/jmemcached-server/pom.xml
@@ -157,7 +157,7 @@
         <dependency>
             <groupId>org.mockito</groupId>
             <artifactId>mockito-core</artifactId>
-            <version>2.27.0</version>
+            <version>2.28.2</version>
             <scope>test</scope>
         </dependency>
         <dependency>