diff --git a/activeio.spec b/activeio.spec
index 6edf3b7..e953be2 100644
--- a/activeio.spec
+++ b/activeio.spec
@@ -101,25 +101,24 @@ This package contains javadoc for %{name}.
   </execution>
 </executions>'
 
-%pom_xpath_remove "pom:plugin[pom:artifactId = 'maven-jar-plugin']/pom:executions/pom:execution" %{name}-core
-%pom_xpath_inject "pom:plugin[pom:artifactId = 'maven-jar-plugin']/pom:executions" "
-<execution>
- <id>default-jar</id>
- <goals>
-  <goal>jar</goal>
- </goals>
- <configuration>
+%pom_remove_plugin :maven-jar-plugin %{name}-core
+%pom_add_plugin org.apache.maven.plugins:maven-jar-plugin: %{name}-core "
+<configuration>
   <archive>
     <manifestFile>\${project.build.outputDirectory}/META-INF/MANIFEST.MF</manifestFile>
+    <manifest>
+      <addDefaultImplementationEntries>true</addDefaultImplementationEntries>
+      <addDefaultSpecificationEntries>true</addDefaultSpecificationEntries>
+    </manifest>
   </archive>
- </configuration>
-</execution>
-<execution>
- <id>test-jar</id>
- <goals>
-  <goal>test-jar</goal>
- </goals>
-</execution>" %{name}-core
+</configuration>
+<executions>
+  <execution>
+    <goals>
+      <goal>test-jar</goal>
+    </goals>
+  </execution>
+</executions>"
 
 sed -i 's/\r//' NOTICE