diff --git a/Project.toml b/Project.toml
index c9a0e967..cd1f2268 100644
--- a/Project.toml
+++ b/Project.toml
@@ -46,4 +46,4 @@ StaticArrays = "1"
 SummationByPartsOperators = "0.5"
 Triangulate = "2"
 WriteVTK = "1"
-julia = "1.10"
+julia = "1.9"