diff --git a/Project.toml b/Project.toml
index 5cf6eaa2..bf34ce28 100644
--- a/Project.toml
+++ b/Project.toml
@@ -27,7 +27,7 @@ GasChemExt = "GasChem"
 DifferentialEquations = "7"
 EarthSciData = "0.9"
 EarthSciMLBase = "0.15"
-GasChem = "0.6"
+GasChem = "0.6, 0.7"
 IfElse = "0.1"
 ModelingToolkit = "8"
 SafeTestsets = "0.1"