diff --git a/docs/Project.toml b/docs/Project.toml
index d70f2aa3d3d808a69af6c04b8ab3e345777a2bb2..9cea1c5a62d7721997e51bdf2ba080f58562f825 100644
--- a/docs/Project.toml
+++ b/docs/Project.toml
@@ -7,4 +7,5 @@ OptimalControl = "5f98b655-cc9a-415a-b60e-744165666948"
 Plots = "91a5bcdd-55d7-5caf-9e0b-520d859cae80"
 
 [compat]
+CTBase = "0.14"
 Documenter = "1"