diff --git a/.readthedocs_requirements.txt b/.readthedocs_requirements.txt
index 9242bc2..26f7957 100644
--- a/.readthedocs_requirements.txt
+++ b/.readthedocs_requirements.txt
@@ -1,2 +1,2 @@
 git+https://github.com/PyUtilib/pyutilib
-
+git+https://github.com/Pyomo/pyomo