diff --git a/docs/Project.toml b/docs/Project.toml
index d0bd6d1..d8132ea 100644
--- a/docs/Project.toml
+++ b/docs/Project.toml
@@ -7,3 +7,6 @@ GLPK = "60bf3e95-4087-53dc-ae20-288a0d20c6a6"
 JuMP = "4076af6c-e467-56ae-b986-b466b2749572"
 Literate = "98b081ad-f1c9-55d3-8b20-4c87d4299306"
 SBML = "e5567a89-2604-4b09-9718-f5f78e97c3bb"
+
+[compat]
+Documenter = "<1"