diff --git a/Project.toml b/Project.toml
index fc23d7ad2..e09da30ad 100644
--- a/Project.toml
+++ b/Project.toml
@@ -2,7 +2,7 @@ name = "ControlSystems"
 uuid = "a6e380b2-a6ca-5380-bf3e-84a91bcd477e"
 authors = ["Dept. Automatic Control, Lund University"]
 repo = "https://github.com/JuliaControl/ControlSystems.jl.git"
-version = "0.11.3"
+version = "0.11.4"
 
 [deps]
 Colors = "5ae59095-9a9b-59fe-a467-6f913c188581"
@@ -30,7 +30,7 @@ IterTools = "1.0"
 LaTeXStrings = "1.0"
 MacroTools = "0.5"
 MatrixPencils = "1.6"
-OrdinaryDiffEq = "5.2"
+OrdinaryDiffEq = "5.2, 6.0"
 Plots = "0.24, 0.25, 0.26, 0.27, 0.28, 0.29, 1.0"
 Polynomials = "1.1.10, 2.0"
 julia = "1.6"