diff --git a/pystsup/requirements.txt b/pystsup/requirements.txt
index 54a30b3..dfeb116 100644
--- a/pystsup/requirements.txt
+++ b/pystsup/requirements.txt
@@ -1,4 +1,4 @@
-Pyomo==5.6.6
+Pyomo==5.7.2
 numpy==1.17.2
 openpyxl==2.6.3
 hopcroftkarp==1.2.4