diff --git a/requirements.txt b/requirements.txt
index 1b739cb..97cf4db 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
 future==0.17.1
 networkx==2.2
 tqdm==4.28.1
-six==1.11.0
\ No newline at end of file
+six==1.12.0
\ No newline at end of file