diff --git a/Project.toml b/Project.toml
index 0127901..b5e40d0 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,7 +1,7 @@
 name = "MixedModelsMakie"
 uuid = "b12ae82c-6730-437f-aff9-d2c38332a376"
 authors = ["Phillip Alday <me@phillipalday.com>", "Douglas Bates <dmbates@gmail.com>", "contributors"]
-version = "0.4.0"
+version = "0.4.1"
 
 [deps]
 BSplineKit = "093aae92-e908-43d7-9660-e50ee39d5a0a"
@@ -23,7 +23,7 @@ CairoMakie = "0.11"
 DataFrames = "1"
 Distributions = "0.25"
 KernelDensity = "0.6.3"
-Makie = "0.20"
+Makie = "0.20, 0.21"
 MixedModels = "4.14"
 PrecompileTools = "1"
 Random = "1"