diff --git a/requirements.txt b/requirements.txt
index 6a5b82a..2db2834 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -8,9 +8,14 @@ tweepy==4.4.0
 # Pytz is for timezone manipulations
 pytz~=2021.1
 
+#####################
+# Data visualization
 # Print table data
 tabulate==0.8.9
+# Draw local graphs
+matplotlib==3.5.0
 
+#####################
 # Testing and code checking
 pytest
 python-ta