diff --git a/pom.xml b/pom.xml
index 61dd699..6d8b582 100644
--- a/pom.xml
+++ b/pom.xml
@@ -66,6 +66,7 @@
                 </executions>
             </plugin>
             <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-release-plugin</artifactId>
                 <version>2.4.2</version>
                 <configuration>
@@ -83,6 +84,7 @@
                 </dependencies>
             </plugin>
             <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-surefire-plugin</artifactId>
                 <version>2.19.1</version>
                 <configuration>
@@ -99,6 +101,7 @@
                 </configuration>
             </plugin>
             <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-failsafe-plugin</artifactId>
                 <version>2.19.1</version>
                 <configuration>