diff --git a/pom.xml b/pom.xml
index 145aac5..0952dc3 100644
--- a/pom.xml
+++ b/pom.xml
@@ -43,7 +43,7 @@
         <javax-mail.version>1.4.7</javax-mail.version>
         <subethasmtp.version>3.1.7</subethasmtp.version>
         <junit.version>4.12</junit.version>
-        <mockito-core.version>1.10.19</mockito-core.version>
+        <mockito-core.version>2.21.0</mockito-core.version>
         <simple-java-mail.version>3.1.1</simple-java-mail.version>
         <spring-framework.version>5.0.8.RELEASE</spring-framework.version>