diff --git a/docs/Project.toml b/docs/Project.toml
index 58fd2ec21c..c3db538d7b 100644
--- a/docs/Project.toml
+++ b/docs/Project.toml
@@ -37,6 +37,7 @@ BenchmarkTools = "1.3"
 BifurcationKit = "0.4"
 CairoMakie = "0.13"
 CommonSolve = "0.2"
+ControlSystemsBase = "1"
 DataInterpolations = "6.5, 8"
 DiffEqDevTools = "2"
 Distributions = "0.25"