diff --git a/pom.xml b/pom.xml
index 7119e63..a9d68f2 100644
--- a/pom.xml
+++ b/pom.xml
@@ -258,7 +258,7 @@
         <dependency>
             <groupId>org.apache.opennlp</groupId>
             <artifactId>opennlp-tools</artifactId>
-            <version>1.9.4</version>
+            <version>2.1.1</version>
         </dependency>
         <dependency>
             <groupId>junit</groupId>