diff --git a/tika-parsers/tika-parsers-ml/tika-age-recogniser/pom.xml b/tika-parsers/tika-parsers-ml/tika-age-recogniser/pom.xml
index e014728bce..097f2c4223 100644
--- a/tika-parsers/tika-parsers-ml/tika-age-recogniser/pom.xml
+++ b/tika-parsers/tika-parsers-ml/tika-age-recogniser/pom.xml
@@ -97,7 +97,7 @@
       <dependency>
           <groupId>org.apache.zookeeper</groupId>
           <artifactId>zookeeper</artifactId>
-          <version>3.9.0</version>
+          <version>3.9.1</version>
           <exclusions>
               <exclusion>
                   <groupId>io.netty</groupId>