diff --git a/pom.xml b/pom.xml
index caaabb5..3eda53b 100644
--- a/pom.xml
+++ b/pom.xml
@@ -15,6 +15,7 @@
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <kotlin.code.style>official</kotlin.code.style>
         <kotlin.compiler.jvmTarget>1.8</kotlin.compiler.jvmTarget>
+        <kotlin.version>1.6.21</kotlin.version>
     </properties>
 
     <repositories>
@@ -31,7 +32,7 @@
             <plugin>
                 <groupId>org.jetbrains.kotlin</groupId>
                 <artifactId>kotlin-maven-plugin</artifactId>
-                <version>1.5.10</version>
+                <version>${kotlin.version}</version>
                 <executions>
                     <execution>
                         <id>compile</id>
@@ -48,6 +49,9 @@
                         </goals>
                     </execution>
                 </executions>
+                <configuration>
+                    <jvmTarget>1.6</jvmTarget>
+                </configuration>
             </plugin>
             <plugin>
                 <artifactId>maven-surefire-plugin</artifactId>
@@ -69,6 +73,22 @@
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
                 <version>3.5.1</version>
+                <executions>
+                    <execution>
+                        <id>compile</id>
+                        <phase>compile</phase>
+                        <goals>
+                            <goal>compile</goal>
+                        </goals>
+                    </execution>
+                    <execution>
+                        <id>testCompile</id>
+                        <phase>test-compile</phase>
+                        <goals>
+                            <goal>testCompile</goal>
+                        </goals>
+                    </execution>
+                </executions>
                 <configuration>
                     <source>8</source>
                     <target>8</target>
@@ -101,6 +121,17 @@
             <artifactId>kotlin-stdlib-jdk8</artifactId>
             <version>1.6.10</version>
         </dependency>
+        <dependency>
+            <groupId>org.jetbrains.kotlin</groupId>
+            <artifactId>kotlin-stdlib</artifactId>
+            <version>${kotlin.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.jetbrains.kotlin</groupId>
+            <artifactId>kotlin-test</artifactId>
+            <version>${kotlin.version}</version>
+            <scope>test</scope>
+        </dependency>
     </dependencies>
 
 </project>
\ No newline at end of file