diff --git a/setup.py b/setup.py
index 3b3605b..3209f15 100644
--- a/setup.py
+++ b/setup.py
@@ -27,7 +27,7 @@ setup(
         "peewee <= 3.13.3",
         "janus <= 0.5.0",
         "cachetools >= 3.0.0"
-        "prompt_toolkit > 2 < 4",
+        "prompt_toolkit>2<4",
         "typing;python_version<'3.5'",
         "matrix-nio[e2e] >= 0.8.0"
     ],