diff --git a/pyproject.toml b/pyproject.toml
index ddac847..1442079 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -25,8 +25,8 @@ classifiers = [
 
 ]
 dependencies = [
-    "rougail ~= 1.1.0",
-    "tiramisu_cmdline_parser ~= 0.6.0",
+    "rougail >= 1.1,<2",
+    "tiramisu_cmdline_parser >= 0.6,<1",
 ]
 
 [project.scripts]