diff --git a/pom.xml b/pom.xml
index 1a11c6fd1..8c598f0f5 100644
--- a/pom.xml
+++ b/pom.xml
@@ -786,9 +786,18 @@
                     <groupId>org.apache.maven.plugins</groupId>
                     <artifactId>maven-source-plugin</artifactId>
                     <version>3.2.1</version>
-                    <configuration>
-                        <attach>false</attach>
-                    </configuration>
+                    <executions>
+                        <execution>
+                            <id>attach-sources</id>
+                            <phase>verify</phase>
+                            <goals>
+                                <goal>jar-no-fork</goal>
+                            </goals>
+                            <configuration>
+                                <attach>true</attach>
+                            </configuration>
+                        </execution>
+                    </executions>
                 </plugin>
                 <plugin>
                     <groupId>org.apache.maven.plugins</groupId>