diff --git a/examples/1-mauna-loa/Project.toml b/examples/1-mauna-loa/Project.toml
index 9a41d0fc..b51c0c81 100644
--- a/examples/1-mauna-loa/Project.toml
+++ b/examples/1-mauna-loa/Project.toml
@@ -16,4 +16,4 @@ Literate = "2"
 Optim = "1"
 ParameterHandling = "0.4, 0.5"
 Plots = "1"
-Zygote = "0.6"
+Zygote = "0.6, 0.7"