diff --git a/setup.py b/setup.py
index 7a1947d2a0..4c33269242 100644
--- a/setup.py
+++ b/setup.py
@@ -37,6 +37,7 @@
         "numpy>=1.23,<2",
         "scipy>=1.10",
         "cvxpy!=1.3.0,!=1.3.1",
+        "osqp<1.0",
         "pandas>=2.0",
         "tables",
         "SALib",