diff --git a/pom.xml b/pom.xml
index ccef224..528ec3e 100644
--- a/pom.xml
+++ b/pom.xml
@@ -63,7 +63,7 @@
     <jersey.version>4.0.1</jersey.version>
     <log4j.version>2.25.3</log4j.version>
     <jackson.version>2.20.1</jackson.version>
-    <jackson.mainversion>2.20</jackson.mainversion>
+    <jackson.mainversion>2.21</jackson.mainversion>
     <lucene.version>5.0.0</lucene.version>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
   </properties>