diff --git a/requirements.txt b/requirements.txt
index 3ae40fdd..19c07a96 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -15,7 +15,7 @@ requests >= 2.22.0, < 3.0.0
 ruamel.yaml >= 0.16.0, < 0.17.0
 six >= 1.12.0, < 2.0.0
 stringcase >= 1.2.0, < 2.0.0
-taskflow==3.7.1
+taskflow==4.5.0
 networkx==1.11
 pypandoc >= 1.4, < 2.0
 ply >= 3.8