diff --git a/jsprit-analysis/pom.xml b/jsprit-analysis/pom.xml
index 47d55940..2565670d 100644
--- a/jsprit-analysis/pom.xml
+++ b/jsprit-analysis/pom.xml
@@ -13,15 +13,12 @@
             <groupId>org.jfree</groupId>
             <artifactId>jfreechart</artifactId>
             <version>1.0.19</version>
-            <scope>compile</scope>
         </dependency>
 
         <dependency>
             <groupId>${project.groupId}</groupId>
             <artifactId>jsprit-core</artifactId>
             <version>${project.version}</version>
-            <type>jar</type>
-            <scope>provided</scope>
         </dependency>
 
         <dependency>
diff --git a/jsprit-examples/pom.xml b/jsprit-examples/pom.xml
index d63a8c55..e4df05cc 100644
--- a/jsprit-examples/pom.xml
+++ b/jsprit-examples/pom.xml
@@ -14,31 +14,23 @@
             <groupId>${project.groupId}</groupId>
             <artifactId>jsprit-instances</artifactId>
             <version>${project.version}</version>
-            <type>jar</type>
-            <scope>provided</scope>
         </dependency>
 
         <dependency>
             <groupId>${project.groupId}</groupId>
             <artifactId>jsprit-core</artifactId>
             <version>${project.version}</version>
-            <type>jar</type>
-            <scope>provided</scope>
         </dependency>
         <dependency>
             <groupId>${project.groupId}</groupId>
             <artifactId>jsprit-analysis</artifactId>
             <version>${project.version}</version>
-            <type>jar</type>
-            <scope>provided</scope>
         </dependency>
 
         <dependency>
             <groupId>${project.groupId}</groupId>
             <artifactId>jsprit-io</artifactId>
             <version>${project.version}</version>
-            <type>jar</type>
-            <scope>provided</scope>
         </dependency>
 
         <dependency>
diff --git a/jsprit-io/pom.xml b/jsprit-io/pom.xml
index b6700b37..95592995 100644
--- a/jsprit-io/pom.xml
+++ b/jsprit-io/pom.xml
@@ -17,23 +17,18 @@
             <groupId>${project.groupId}</groupId>
             <artifactId>jsprit-core</artifactId>
             <version>${project.version}</version>
-            <type>jar</type>
-            <scope>provided</scope>
         </dependency>
 
         <dependency>
             <groupId>commons-configuration</groupId>
             <artifactId>commons-configuration</artifactId>
             <version>1.9</version>
-            <type>jar</type>
-            <scope>compile</scope>
         </dependency>
 
         <dependency>
             <groupId>xerces</groupId>
             <artifactId>xercesImpl</artifactId>
             <version>2.11.0</version>
-            <scope>compile</scope>
         </dependency>
 
     </dependencies>
diff --git a/pom.xml b/pom.xml
index 3d385881..084d6c26 100644
--- a/pom.xml
+++ b/pom.xml
@@ -109,7 +109,7 @@
             </testResource>
         </testResources>
 
-       <!-- <pluginManagement>
+       <pluginManagement>
             <plugins>
                 <plugin>
                     <groupId>org.eclipse.m2e</groupId>
@@ -136,10 +136,10 @@
                     </configuration>
                 </plugin>
             </plugins>
-        </pluginManagement>-->
+        </pluginManagement>
         <plugins>
 
-            <!--<plugin>
+            <plugin>
                 <artifactId>maven-enforcer-plugin</artifactId>
                 <version>1.1.1</version>
                 <executions>
@@ -168,7 +168,7 @@
                         </configuration>
                     </execution>
                 </executions>
-            </plugin>-->
+            </plugin>
 
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>