diff --git a/setup.py b/setup.py
index 66d413836..98c58135f 100644
--- a/setup.py
+++ b/setup.py
@@ -74,7 +74,7 @@ install_requires = [
     "networkx>=2.1,<2.5",
     "pydot>=1.2.4",
     "speedcopy>=2.0.1; python_version < '3.8' and sys_platform == 'win32'",
-    "dataclasses; python_version < '3.7'",
+    "dataclasses==0.7; python_version < '3.7'",
     "flatten_dict>=0.3.0,<1",
     "tabulate>=0.8.7",
     "pygtrie==2.3.2",