diff --git a/pyproject.toml b/pyproject.toml
index aeb3a71d..fe025cf6 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -9,7 +9,7 @@ generate-setup-file = false
 script = "build.py"
 
 [tool.poetry.dependencies]
-python = "^3.9"
+python = "3.9"
 aiofiles = "0.7.0"
 asgiref = "3.4.1"
 attrs = "21.2.0"