Fix derby version
diff --git a/pom.xml b/pom.xml
index 30767d1..a5c6e8b 100644
--- a/pom.xml
+++ b/pom.xml
@@ -299,7 +299,7 @@
     <dependency>
       <groupId>org.apache.derby</groupId>
       <artifactId>derbytools</artifactId>
-      <version>${version.derby}</version>
+      <version>${derby.version}</version>
     </dependency>
 
     <dependency>