diff --git a/modules/gatling-ext/pom.xml b/modules/gatling-ext/pom.xml
index b8959efdf..dbecf511e 100644
--- a/modules/gatling-ext/pom.xml
+++ b/modules/gatling-ext/pom.xml
@@ -34,9 +34,10 @@
     <version>1.0.0-SNAPSHOT</version>
 
     <properties>
+        <scala.library.version>2.13.14</scala.library.version>
         <gatling.version>3.10.4</gatling.version>
         <gatling-maven-plugin.version>4.8.2</gatling-maven-plugin.version>
-        <scala-maven-plugin.version>4.8.1</scala-maven-plugin.version>
+        <scala-maven-plugin.version>4.9.10</scala-maven-plugin.version>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     </properties>
 
@@ -47,6 +48,42 @@
 
     <build>
         <plugins>
+            <plugin>
+                <groupId>org.codehaus.mojo</groupId>
+                <artifactId>flatten-maven-plugin</artifactId>
+                <executions>
+                    <execution>
+                        <id>flatten</id>
+                        <inherited>false</inherited>
+                        <phase/>
+                    </execution>
+                </executions>
+            </plugin>
+            <plugin>
+                <groupId>net.alchim31.maven</groupId>
+                <artifactId>scala-maven-plugin</artifactId>
+                <version>4.9.10</version>
+                <executions>
+                    <execution>
+                        <id>scala-compile-first</id>
+                        <phase>process-resources</phase>
+                        <goals>
+                            <goal>add-source</goal>
+                            <goal>compile</goal>
+                        </goals>
+                    </execution>
+                    <execution>
+                        <id>scala-test-compile</id>
+                        <phase>process-test-resources</phase>
+                        <goals>
+                            <goal>testCompile</goal>
+                        </goals>
+                    </execution>
+                </executions>
+                <configuration>
+                    <scalaVersion>${scala.library.version}</scalaVersion>
+                </configuration>
+            </plugin>
             <plugin>
                 <groupId>org.apache.felix</groupId>
                 <artifactId>maven-bundle-plugin</artifactId>