diff --git a/pom.xml b/pom.xml
index 03f22e5..d7621ac 100644
--- a/pom.xml
+++ b/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>
@@ -508,6 +488,7 @@
 			</plugin>
 			<plugin>
 				<artifactId>maven-clean-plugin</artifactId>
+                <version>2.4.1</version>
 				<configuration>
 					<filesets>
 						<fileset>