diff --git a/Project.toml b/Project.toml
index 9181bc3..f80ada5 100644
--- a/Project.toml
+++ b/Project.toml
@@ -31,7 +31,7 @@ Statistics = "10745b16-79ce-11e8-11f9-7d13ad32a3b2"
 ThermofluidQuantities = "8e558ecf-e13e-4796-9812-ac12e4724222"
 
 [compat]
-ColorTypes = "0.10.9"
+ColorTypes = "0.10.9, 0.11"
 Conda = "1.5.0"
 CurveFit = "0.3"
 GR = "< 0.57.0, 0.58"