diff --git a/docs/Project.toml b/docs/Project.toml
index 0951be955..7c1405254 100644
--- a/docs/Project.toml
+++ b/docs/Project.toml
@@ -51,7 +51,7 @@ DASKR = "2.9.1"
 DDEProblemLibrary = "0.1"
 DataFrames = "1.4"
 DiffEqBase = "6.106"
-DiffEqCallbacks = "3"
+DiffEqCallbacks = "3, 4"
 DifferentialEquations = "7.6"
 Distributions = "0.25"
 Documenter = "1"