diff --git a/docs/Project.toml b/docs/Project.toml
index 6bb99e1024..58eb5cd592 100644
--- a/docs/Project.toml
+++ b/docs/Project.toml
@@ -4,3 +4,4 @@ OrdinaryDiffEq = "1dea7af3-3e70-54e6-95c3-0bf5283fa5ed"
 
 [compat]
 Documenter = "0.27"
+OrdinaryDiffEq = "6"