diff --git a/docs/Project.toml b/docs/Project.toml
index fe9a9d0..9fc6e1d 100644
--- a/docs/Project.toml
+++ b/docs/Project.toml
@@ -3,5 +3,5 @@ Documenter = "e30172f5-a6a5-5a46-863b-614d45cd2de4"
 ExactOptimalTransport = "24df6009-d856-477c-ac5c-91f668376b31"
 
 [compat]
-Documenter = "0.27"
+Documenter = "0.27, 1"
 ExactOptimalTransport = "0.2"