diff --git a/Project.toml b/Project.toml
index 2d15dfa..5af71f6 100644
--- a/Project.toml
+++ b/Project.toml
@@ -18,6 +18,6 @@ HDF5 = "0.14, 0.15"
 ProgressMeter = "1.3"
 StaticArrays = "0.12, 1.0"
 TimerOutputs = "0.5"
-Trixi = "0.3.42"
+Trixi = "0.3.42, 0.4"
 WriteVTK = "1.7"
 julia = "1.6"