diff --git a/lemmatizer/pom.xml b/lemmatizer/pom.xml
index be3fee001..c73ba05f1 100644
--- a/lemmatizer/pom.xml
+++ b/lemmatizer/pom.xml
@@ -26,7 +26,7 @@
         <dependency>
             <groupId>edu.stanford.nlp</groupId>
             <artifactId>stanford-corenlp</artifactId>
-            <version>3.3.1</version>
+            <version>4.4.0</version>
         </dependency>
         <dependency>
             <groupId>edu.mit</groupId>