diff --git a/docs/Project.toml b/docs/Project.toml
index 0a6d165..eca7e12 100644
--- a/docs/Project.toml
+++ b/docs/Project.toml
@@ -3,4 +3,4 @@ Documenter = "e30172f5-a6a5-5a46-863b-614d45cd2de4"
 MixedModelsExtras = "781a26e1-49f4-409a-8f4c-c3159d78c17e"
 
 [compat]
-Documenter = "1"
+Documenter = "1.3"