diff --git a/Project.toml b/Project.toml
index bd83997..1496937 100644
--- a/Project.toml
+++ b/Project.toml
@@ -15,7 +15,7 @@ Statistics = "10745b16-79ce-11e8-11f9-7d13ad32a3b2"
 FastPow = "0.1"
 Parameters = "0.12"
 StaticArrays = "1"
-julia = "1"
+julia = "1.9"
 
 [extras]
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"