diff --git a/docs/Project.toml b/docs/Project.toml
index 1a208b8..b621153 100644
--- a/docs/Project.toml
+++ b/docs/Project.toml
@@ -7,6 +7,6 @@ Documenter = "e30172f5-a6a5-5a46-863b-614d45cd2de4"
 [compat]
 AbstractGPs = "0.3, 0.4, 0.5"
 AbstractGPsMakie = "0.2"
-CairoMakie = "0.6, 0.7, 0.8, 0.9, 0.10, 0.11, 0.12, 0.13"
+CairoMakie = "0.6, 0.7, 0.8, 0.9, 0.10, 0.11, 0.12, 0.13, 0.15"
 Documenter = "1"
 julia = "1.3"