diff --git a/setup.py b/setup.py
index <HASH>..<HASH> 100644
--- a/setup.py
+++ b/setup.py
@@ -61,5 +61,5 @@ setup(
     # project is installed. For an analysis of "install_requires" vs pip's
     # requirements files see:
     # https://packaging.python.org/en/latest/requirements.html
-    install_requires=['pyparsing'],
+    install_requires=['pyparsing>=2.0.3'],
 )
Add pyparsing version requirement