diff --git a/Project.toml b/Project.toml
index 63ca5bab..4236f3aa 100644
--- a/Project.toml
+++ b/Project.toml
@@ -19,7 +19,7 @@ UnsafeArrays = "c4a57d5a-5b31-53a6-b365-19f8c011fbd6"
 DocStringExtensions = "0.8"
 FiniteDiff = "2"
 ForwardDiff = "0.10"
-MathOptInterface = "0.9"
+MathOptInterface = "0.9, 1"
 RobotDynamics = "0.4.3"
 RobotZoo = "0.3"
 Rotations = "~1.0"