diff --git a/Project.toml b/Project.toml
index aab59e4..32d38f4 100644
--- a/Project.toml
+++ b/Project.toml
@@ -20,7 +20,7 @@ ImageFiltering = "0.4 - 0.7"
 ImageMagick = "0.7, 1"
 QuartzImageIO = "0.7"
 Requires = "1"
-julia = "1"
+julia = "1.4"
 
 [extras]
 Gtk = "4c0ca9eb-093a-5379-98c5-f87ac0bbbf44"