diff --git a/hivesterix/pom.xml b/hivesterix/pom.xml
index 03f22e5..cf9c4b5 100644
--- a/hivesterix/pom.xml
+++ b/hivesterix/pom.xml
@@ -102,13 +102,6 @@
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
-			<groupId>org.apache.derby</groupId>
-			<artifactId>derby</artifactId>
-			<version>10.6.1.0</version>
-			<type>jar</type>
-			<scope>compile</scope>
-		</dependency>
-		<dependency>
 			<groupId>commons-collections</groupId>
 			<artifactId>commons-collections</artifactId>
 			<version>3.2.1</version>
@@ -230,13 +223,6 @@
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
-			<groupId>org.apache.derby</groupId>
-			<artifactId>derby</artifactId>
-			<version>10.4.2.0</version>
-			<type>jar</type>
-			<scope>compile</scope>
-		</dependency>
-		<dependency>
 			<groupId>commons-cli</groupId>
 			<artifactId>commons-cli</artifactId>
 			<version>1.2</version>
@@ -273,13 +259,6 @@
 			<scope>compile</scope>
 		</dependency>
 		<dependency>
-			<groupId>jline</groupId>
-			<artifactId>jline</artifactId>
-			<version>0.9.94</version>
-			<type>jar</type>
-			<scope>compile</scope>
-		</dependency>
-		<dependency>
 			<groupId>org.antlr</groupId>
 			<artifactId>stringtemplate</artifactId>
 			<version>3.2</version>
@@ -336,6 +315,7 @@
 			<plugin>
 				<groupId>org.codehaus.mojo</groupId>
 				<artifactId>appassembler-maven-plugin</artifactId>
+				<version>1.3</version>
 				<executions>
 					<execution>
 						<configuration>
@@ -375,7 +355,7 @@
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-surefire-plugin</artifactId>
-				<version>2.7.2</version>
+				<version>2.13</version>
 				<configuration>
 					<forkMode>pertest</forkMode>
 					<argLine>-enableassertions -Xmx2047m -Dfile.encoding=UTF-8 
@@ -508,6 +488,7 @@
 			</plugin>
 			<plugin>
 				<artifactId>maven-clean-plugin</artifactId>
+				<version>2.5</version>
 				<configuration>
 					<filesets>
 						<fileset>
diff --git a/hyracks/hyracks-cli/pom.xml b/hyracks/hyracks-cli/pom.xml
index 3933be0..7bb6123 100644
--- a/hyracks/hyracks-cli/pom.xml
+++ b/hyracks/hyracks-cli/pom.xml
@@ -41,6 +41,7 @@
       <plugin>
         <groupId>org.codehaus.mojo</groupId>
         <artifactId>appassembler-maven-plugin</artifactId>
+        <version>1.3</version>
         <executions>
           <execution>
             <configuration>
diff --git a/hyracks/hyracks-dist/pom.xml b/hyracks/hyracks-dist/pom.xml
index 4f9fc20..c86c4e6 100755
--- a/hyracks/hyracks-dist/pom.xml
+++ b/hyracks/hyracks-dist/pom.xml
@@ -6,7 +6,7 @@
 	<parent>
 		<artifactId>hyracks</artifactId>
 		<groupId>edu.uci.ics.hyracks</groupId>
-		<version>0.2.2-SNAPSHOT</version>
+		<version>0.2.3-SNAPSHOT</version>
 	</parent>
 
 	<artifactId>hyracks-dist</artifactId>
diff --git a/hyracks/hyracks-examples/btree-example/btreeclient/pom.xml b/hyracks/hyracks-examples/btree-example/btreeclient/pom.xml
index 82919ca..ba296ac 100644
--- a/hyracks/hyracks-examples/btree-example/btreeclient/pom.xml
+++ b/hyracks/hyracks-examples/btree-example/btreeclient/pom.xml
@@ -44,6 +44,7 @@
       <plugin>
         <groupId>org.codehaus.mojo</groupId>
         <artifactId>appassembler-maven-plugin</artifactId>
+        <version>1.3</version>
         <executions>
           <execution>
             <configuration>
diff --git a/hyracks/hyracks-examples/hadoop-compat-example/hadoopcompatclient/pom.xml b/hyracks/hyracks-examples/hadoop-compat-example/hadoopcompatclient/pom.xml
index 2f0b00f..dd96db8 100644
--- a/hyracks/hyracks-examples/hadoop-compat-example/hadoopcompatclient/pom.xml
+++ b/hyracks/hyracks-examples/hadoop-compat-example/hadoopcompatclient/pom.xml
@@ -40,6 +40,7 @@
       <plugin>
         <groupId>org.codehaus.mojo</groupId>
         <artifactId>appassembler-maven-plugin</artifactId>
+        <version>1.3</version>
         <executions>
           <execution>
             <configuration>
diff --git a/hyracks/hyracks-examples/text-example/textclient/pom.xml b/hyracks/hyracks-examples/text-example/textclient/pom.xml
index d593ef9..901f1fb 100644
--- a/hyracks/hyracks-examples/text-example/textclient/pom.xml
+++ b/hyracks/hyracks-examples/text-example/textclient/pom.xml
@@ -40,6 +40,7 @@
       <plugin>
         <groupId>org.codehaus.mojo</groupId>
         <artifactId>appassembler-maven-plugin</artifactId>
+        <version>1.3</version>
         <executions>
           <execution>
           <id>textclient</id>
diff --git a/hyracks/hyracks-examples/tpch-example/tpchclient/pom.xml b/hyracks/hyracks-examples/tpch-example/tpchclient/pom.xml
index 3170306..6b3f603 100644
--- a/hyracks/hyracks-examples/tpch-example/tpchclient/pom.xml
+++ b/hyracks/hyracks-examples/tpch-example/tpchclient/pom.xml
@@ -36,6 +36,7 @@
       <plugin>
         <groupId>org.codehaus.mojo</groupId>
         <artifactId>appassembler-maven-plugin</artifactId>
+        <version>1.3</version>
         <executions>
           <execution>
             <configuration>
diff --git a/hyracks/hyracks-hadoop-compat/pom.xml b/hyracks/hyracks-hadoop-compat/pom.xml
index 849efe3..3426293 100644
--- a/hyracks/hyracks-hadoop-compat/pom.xml
+++ b/hyracks/hyracks-hadoop-compat/pom.xml
@@ -25,6 +25,7 @@
       <plugin>
         <groupId>org.codehaus.mojo</groupId>
         <artifactId>appassembler-maven-plugin</artifactId>
+        <version>1.3</version>
         <executions>
           <execution>
             <configuration>
diff --git a/hyracks/hyracks-server/pom.xml b/hyracks/hyracks-server/pom.xml
index 2699c27..6c6640e 100644
--- a/hyracks/hyracks-server/pom.xml
+++ b/hyracks/hyracks-server/pom.xml
@@ -22,6 +22,7 @@
       <plugin>
         <groupId>org.codehaus.mojo</groupId>
         <artifactId>appassembler-maven-plugin</artifactId>
+        <version>1.3</version>
         <executions>
           <execution>
             <configuration>
diff --git a/hyracks/pom.xml b/hyracks/pom.xml
index 1d4e094..fc9a371 100644
--- a/hyracks/pom.xml
+++ b/hyracks/pom.xml
@@ -29,6 +29,7 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-surefire-plugin</artifactId>
+        <version>2.13</version>
         <configuration>
             <forkMode>pertest</forkMode>
             <argLine>-enableassertions -Djava.util.logging.config.file=${user.home}/logging.properties -Xdebug -Xrunjdwp:transport=dt_socket,server=y,address=8000,suspend=n ${jvm.extraargs}</argLine>
@@ -42,6 +43,7 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-changelog-plugin</artifactId>
+        <version>2.2</version>
       </plugin>
     </plugins>
   </reporting>
diff --git a/pregelix/pom.xml b/pregelix/pom.xml
index 4b6a968..7d08fb7 100644
--- a/pregelix/pom.xml
+++ b/pregelix/pom.xml
@@ -44,6 +44,7 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-surefire-plugin</artifactId>
+        <version>2.13</version>
         <configuration>
             <forkMode>pertest</forkMode>
             <argLine>-enableassertions -Djava.util.logging.config.file=${user.home}/logging.properties -Xdebug -Xrunjdwp:transport=dt_socket,server=y,address=8000,suspend=n ${jvm.extraargs}</argLine>
@@ -57,6 +58,7 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-changelog-plugin</artifactId>
+        <version>2.2</version>
       </plugin>
     </plugins>
   </reporting>
diff --git a/pregelix/pregelix-api/pom.xml b/pregelix/pregelix-api/pom.xml
index 66a0186..2caa93b 100644
--- a/pregelix/pregelix-api/pom.xml
+++ b/pregelix/pregelix-api/pom.xml
@@ -41,6 +41,7 @@
 			</plugin>
 			<plugin>
 				<artifactId>maven-clean-plugin</artifactId>
+				<version>2.5</version>
 				<configuration>
 					<filesets>
 						<fileset>
diff --git a/pregelix/pregelix-core/pom.xml b/pregelix/pregelix-core/pom.xml
index f17ed08..1618810 100644
--- a/pregelix/pregelix-core/pom.xml
+++ b/pregelix/pregelix-core/pom.xml
@@ -19,6 +19,7 @@
 		<plugins>
 			<plugin>
 				<artifactId>maven-jar-plugin</artifactId>
+				<version>2.4</version>
 				<executions>
 					<execution>
 						<id>balancer</id>
@@ -38,11 +39,6 @@
 							</includes>
 						</configuration>
 					</execution>
-				</executions>
-			</plugin>
-			<plugin>
-				<artifactId>maven-jar-plugin</artifactId>
-				<executions>
 					<execution>
 						<id>generator</id>
 						<goals>
@@ -61,11 +57,6 @@
 							</includes>
 						</configuration>
 					</execution>
-				</executions>
-			</plugin>
-			<plugin>
-				<artifactId>maven-jar-plugin</artifactId>
-				<executions>
 					<execution>
 						<id>patch</id>
 						<goals>
@@ -94,6 +85,7 @@
 			<plugin>
 				<groupId>org.codehaus.mojo</groupId>
 				<artifactId>appassembler-maven-plugin</artifactId>
+				<version>1.3</version>
 				<executions>
 					<execution>
 						<configuration>
@@ -203,6 +195,7 @@
 			</plugin>
 			<plugin>
 				<artifactId>maven-clean-plugin</artifactId>
+				<version>2.5</version>
 				<configuration>
 					<filesets>
 						<fileset>
diff --git a/pregelix/pregelix-dataflow-std-base/pom.xml b/pregelix/pregelix-dataflow-std-base/pom.xml
index 53d7c22..05a1508 100644
--- a/pregelix/pregelix-dataflow-std-base/pom.xml
+++ b/pregelix/pregelix-dataflow-std-base/pom.xml
@@ -42,6 +42,7 @@
 			</plugin>
 			<plugin>
 				<artifactId>maven-clean-plugin</artifactId>
+				<version>2.5</version>
 				<configuration>
 					<filesets>
 						<fileset>
diff --git a/pregelix/pregelix-dataflow-std/pom.xml b/pregelix/pregelix-dataflow-std/pom.xml
index cc9a184..36b0eb8 100644
--- a/pregelix/pregelix-dataflow-std/pom.xml
+++ b/pregelix/pregelix-dataflow-std/pom.xml
@@ -42,6 +42,7 @@
 			</plugin>
 			<plugin>
 				<artifactId>maven-clean-plugin</artifactId>
+				<version>2.5</version>
 				<configuration>
 					<filesets>
 						<fileset>
diff --git a/pregelix/pregelix-dataflow/pom.xml b/pregelix/pregelix-dataflow/pom.xml
index aaa7186..9454ece 100644
--- a/pregelix/pregelix-dataflow/pom.xml
+++ b/pregelix/pregelix-dataflow/pom.xml
@@ -42,6 +42,7 @@
 			</plugin>
 			<plugin>
 				<artifactId>maven-clean-plugin</artifactId>
+				<version>2.5</version>
 				<configuration>
 					<filesets>
 						<fileset>
diff --git a/pregelix/pregelix-dist/pom.xml b/pregelix/pregelix-dist/pom.xml
index 4cb0387..aa3d541 100644
--- a/pregelix/pregelix-dist/pom.xml
+++ b/pregelix/pregelix-dist/pom.xml
@@ -70,7 +70,7 @@
 			<groupId>edu.uci.ics.hyracks</groupId>
 			<artifactId>pregelix-core</artifactId>
 			<version>0.2.3-SNAPSHOT</version>
-			<scope>comile</scope>
+			<scope>compile</scope>
 		</dependency>
 		<dependency>
 			<groupId>edu.uci.ics.hyracks</groupId>
diff --git a/pregelix/pregelix-example/pom.xml b/pregelix/pregelix-example/pom.xml
index 6b9bc89..ce8f985 100644
--- a/pregelix/pregelix-example/pom.xml
+++ b/pregelix/pregelix-example/pom.xml
@@ -41,6 +41,7 @@
 			<plugin>
 				<groupId>org.codehaus.mojo</groupId>
 				<artifactId>appassembler-maven-plugin</artifactId>
+				<version>1.3</version>
 				<executions>
 					<execution>
 						<configuration>
@@ -76,6 +77,7 @@
 			</plugin>
 			<plugin>
 				<artifactId>maven-clean-plugin</artifactId>
+				<version>2.5</version>
 				<configuration>
 					<filesets>
 						<fileset>
diff --git a/pregelix/pregelix-runtime/pom.xml b/pregelix/pregelix-runtime/pom.xml
index d12cb36..1c414ff 100644
--- a/pregelix/pregelix-runtime/pom.xml
+++ b/pregelix/pregelix-runtime/pom.xml
@@ -42,6 +42,7 @@
 			</plugin>
 			<plugin>
 				<artifactId>maven-clean-plugin</artifactId>
+				<version>2.5</version>
 				<configuration>
 					<filesets>
 						<fileset>