diff --git a/pyproject.toml b/pyproject.toml
index 7d7e065..041f9a5 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -32,7 +32,7 @@ classifiers = [
 ]
 dependencies = [
   "haystack-ai>=2.5.0",
-  "outlines>=0.2.0,<1.0.0",
+  "outlines>=0.2.0,<2.0.0",
 ]
 [project.optional-dependencies]
 mlxlm = ["outlines[mlxlm]"]