diff --git a/tools/build/pom.xml b/tools/build/pom.xml
index 33b3a09..a174ef4 100644
--- a/tools/build/pom.xml
+++ b/tools/build/pom.xml
@@ -53,6 +53,10 @@
         </developer>
     </developers>
 
+    <properties>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    </properties>
+
     <distributionManagement>
         <snapshotRepository>
             <id>ossrh</id>