diff --git a/examples/3-parametric-heteroscedastic/Project.toml b/examples/3-parametric-heteroscedastic/Project.toml
index c78378d2..af2ade8c 100644
--- a/examples/3-parametric-heteroscedastic/Project.toml
+++ b/examples/3-parametric-heteroscedastic/Project.toml
@@ -17,5 +17,5 @@ CairoMakie = "0.7, 0.8, 0.9, 0.10"
 KernelFunctions = "0.10"
 Literate = "2"
 Optim = "1"
-ParameterHandling = "0.4"
+ParameterHandling = "0.4, 0.5"
 Zygote = "0.6"