diff --git a/docs/Project.toml b/docs/Project.toml
index d456aa04f..cefe04ed5 100644
--- a/docs/Project.toml
+++ b/docs/Project.toml
@@ -5,3 +5,4 @@ MPIPreferences = "3da0fdf6-3ccc-4f1b-acd9-58baa6c99267"
 
 [compat]
 Documenter = "1"
+MPI = "0.20"