diff --git a/Project.toml b/Project.toml
index f4de1c0..1df74b0 100644
--- a/Project.toml
+++ b/Project.toml
@@ -19,7 +19,7 @@ StaticArrays = "90137ffa-7385-5640-81b9-e52037218182"
 TrajectoryOptimization = "c79d492b-0548-5874-b488-5a62c1d9d0ca"
 
 [compat]
-Altro = "0.3.0 - 0.3.0"
+Altro = "0.3.0 - 0.3.0, 0.4"
 BenchmarkTools = "0.5"
 ForwardDiff = "0.10"
 Parameters = "0.12"