diff --git a/Project.toml b/Project.toml
index 63ca5bab..a882a515 100644
--- a/Project.toml
+++ b/Project.toml
@@ -22,7 +22,7 @@ ForwardDiff = "0.10"
 MathOptInterface = "0.9"
 RobotDynamics = "0.4.3"
 RobotZoo = "0.3"
-Rotations = "~1.0"
+Rotations = "~1.0, 1"
 StaticArrays = "1"
 UnsafeArrays = "1"
 julia = "1"