diff --git a/.mvn/extensions.xml b/.mvn/extensions.xml
deleted file mode 100644
index e4f9d8e..0000000
--- a/.mvn/extensions.xml
+++ /dev/null
@@ -1,8 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<extensions>
-  <extension>
-    <groupId>io.takari.polyglot</groupId>
-    <artifactId>polyglot-groovy</artifactId>
-    <version>0.4.3</version>
-  </extension>
-</extensions>