diff --git a/documents/gantt/gantt.png b/documents/gantt/gantt.png
index afe2cc8..4e93745 100644
Binary files a/documents/gantt/gantt.png and b/documents/gantt/gantt.png differ
diff --git a/documents/gantt/gantt.tex b/documents/gantt/gantt.tex
index 09e6d0e..8e33df6 100644
--- a/documents/gantt/gantt.tex
+++ b/documents/gantt/gantt.tex
@@ -5,7 +5,7 @@
 
 \begin{document}
 \begin{preview}
-  \begin{gantt}{10}{8}
+  \begin{gantt}{13}{8}
     \begin{ganttitle}
         \numtitle{50}{1}{51}{1}
         \titleelement{Christmas}{2}
@@ -17,9 +17,13 @@
             \ganttbarcon{implement metadata}{4.5}{1}
                 \ganttmilestonecon{metadata works}{5.5}
 
+    \ganttgroup{Upload}{4}{2.5}
     \ganttbar{implement Matlab controler}{4}{2}
     \ganttbar{implement file parser}{4}{1.5}
-    \ganttbarcon{implement upload part}{5.5}{1}
+    \ganttbarcon{implement add record}{5.5}{1}
+    \ganttbar{implement segmentation}{5.5}{1}
+    \ganttbar{implement registration}{5.5}{1}
+    \ganttbar{implement classification}{5.5}{1}
     \ganttmilestonecon[color=red]{implementation finished}{7}
   \end{gantt}
 \end{preview}