diff --git a/docs/Project.toml b/docs/Project.toml
index 229287be..b799af4d 100644
--- a/docs/Project.toml
+++ b/docs/Project.toml
@@ -2,4 +2,5 @@
 Documenter = "e30172f5-a6a5-5a46-863b-614d45cd2de4"
 
 [compat]
-Documenter = "1.2"
+Documenter = "0.27"
+