diff --git a/docs/Project.toml b/docs/Project.toml
index b54e27c..a699aa8 100644
--- a/docs/Project.toml
+++ b/docs/Project.toml
@@ -3,4 +3,5 @@ Documenter = "e30172f5-a6a5-5a46-863b-614d45cd2de4"
 DocumenterCitations = "daee34ce-89f3-4625-b898-19384cb65244"
 
 [compat]
+Documenter = "0.27"
 DocumenterCitations = "1.0.0"