diff --git a/test/Project.toml b/test/Project.toml
index dadb46b655..9b5e3c2313 100644
--- a/test/Project.toml
+++ b/test/Project.toml
@@ -12,6 +12,6 @@ Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 [compat]
 Cassette = "0.3.5"
 ForwardDiff = "0.10"
-MPI = "0.16, 0.17, 0.18"
+MPI = "0.16, 0.17, 0.18, 0.19"
 OrdinaryDiffEq = "5.44 - 5.50, 5.51.1"
 Plots = "1.9"