diff --git a/requirements.txt b/requirements.txt
index 4e785903ed73c6ad310061e8efa50731a230a7c0..e4d6b118d28410780830d99f973b5aac6b376f7d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,4 +7,5 @@ pandas==0.24.2
 scikit-learn==0.20.3
 seaborn==0.9.0
 scipy==1.4.1
-numpy==1.18.5
\ No newline at end of file
+numpy==1.18.5
+graphviz==0.16
\ No newline at end of file