diff --git a/tutorials/DiffEqUncertainty/Project.toml b/tutorials/DiffEqUncertainty/Project.toml
index 958ad7db..72691f48 100644
--- a/tutorials/DiffEqUncertainty/Project.toml
+++ b/tutorials/DiffEqUncertainty/Project.toml
@@ -25,6 +25,7 @@ DiffEqUncertainty = "1.5"
 DifferentialEquations = "6.15"
 Distributions = "0.23, 0.24"
 ForwardDiff = "0.10"
+KernelDensity = "0.6"
 MCMCChains = "4.4"
 NLopt = "0.6"
 OrdinaryDiffEq = "5.42"