diff --git a/requirements.txt b/requirements.txt
index e4c5836..ab7a812 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -18,7 +18,7 @@ networkx==2.5
 numpy==1.19.2
 ortools==7.8.7959
 osqp==0.6.1
-Pillow==7.2.0
+Pillow==8.1.1
 protobuf==3.13.0
 pydot==1.4.1
 pyparsing==2.4.7