diff --git a/calendar/sync/pom.xml b/calendar/sync/pom.xml
index af98470c..f09e70db 100644
--- a/calendar/sync/pom.xml
+++ b/calendar/sync/pom.xml
@@ -38,7 +38,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
-                <version>3.10.1</version>
+                <version>3.14.0</version>
                 <configuration>
                     <source>1.8</source>
                     <target>1.8</target>