diff --git a/pom.xml b/pom.xml
index f575129..00f257e 100644
--- a/pom.xml
+++ b/pom.xml
@@ -29,6 +29,11 @@
     </dependency>
     <dependency>
       <groupId>org.antlr</groupId>
+      <artifactId>antlr4-runtime</artifactId>
+      <version>4.5.1</version>
+    </dependency>
+    <dependency>
+      <groupId>org.antlr</groupId>
       <artifactId>antlr4-maven-plugin</artifactId>
       <version>4.2</version>
     </dependency>