diff --git a/pom.xml b/pom.xml
index b1a0d37..3c77efd 100644
--- a/pom.xml
+++ b/pom.xml
@@ -12,8 +12,6 @@
 
   <properties>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-    <maven.compiler.source>1.9</maven.compiler.source>
-    <maven.compiler.target>1.9</maven.compiler.target>
   </properties>
 
   <dependencies>
@@ -182,11 +180,22 @@
   <build>
       
     <plugins>
-             
-            <plugin>
-                <groupId>org.apache.maven.plugins</groupId>
-                <artifactId>maven-shade-plugin</artifactId>
-                <version>3.1.0</version>
+        <plugin>
+            <groupId>org.apache.maven.plugins</groupId>
+            <artifactId>maven-compiler-plugin</artifactId>
+            <version>3.7.0</version>
+            <configuration>
+                <source>9</source>
+                <target>9</target>
+                <showWarnings>true</showWarnings>
+                <showDeprecation>true</showDeprecation>
+            </configuration>
+        </plugin>
+        
+        <plugin>
+            <groupId>org.apache.maven.plugins</groupId>
+            <artifactId>maven-shade-plugin</artifactId>
+            <version>3.1.0</version>
                 <executions>
                     <execution>
                     <phase>package</phase>