diff --git a/Project.toml b/Project.toml
index d8d22ae..e2366a3 100644
--- a/Project.toml
+++ b/Project.toml
@@ -12,6 +12,7 @@ PowerSimulationsDynamics = "398b2ede-47ed-4edc-b52e-69e4a48b4336"
 PowerSystems = "bcd98974-b02a-5e2f-9ee0-a103f5c450dd"
 
 [compat]
+OrdinaryDiffEq = "6"
 julia = "1.1"
 
 [extras]