diff --git a/docs/Project.toml b/docs/Project.toml
index 246727a23e..ebb086fda6 100644
--- a/docs/Project.toml
+++ b/docs/Project.toml
@@ -5,6 +5,7 @@ CairoMakie = "13f3f980-e62b-5c42-98c6-ff1f3baf88f0"
 Catalyst = "479239e8-5488-4da2-87a7-35f2df7eef83"
 DataFrames = "a93c6f00-e57d-5684-b7b6-d8193f3e46c0"
 DiffEqParamEstim = "1130ab10-4a5a-5621-a13d-e4788d82bd4c"
+DifferentialEquations = "0c46a032-eb83-5123-abaf-570d42b7fbaa"
 Distributions = "31c24e10-a181-5473-b8eb-7969acd0382f"
 Documenter = "e30172f5-a6a5-5a46-863b-614d45cd2de4"
 DynamicalSystems = "61744808-ddfa-5f27-97ff-6e42cc95d634"