1 files changed, 1 insertions, 0 deletions

diff --git a/pom.xml b/pom.xml
index 5aa998b0..727ce5ad 100644
--- a/pom.xml
+++ b/pom.xml
@@ -23,6 +23,7 @@
         <module>chapter01</module>
         <module>chapter02</module>
         <module>chapter03</module>
+        <module>chapter04</module>
     </modules>
 
     <properties>