diff --git a/setup.py b/setup.py
index b6cdec9c..3e12fa2b 100644
--- a/setup.py
+++ b/setup.py
@@ -15,7 +15,7 @@
     python_requires='>=3.6',
     license='LICENSE.txt',
     include_package_data = True,
-    keywords='data analysis EPR spectroscopy DEER PELDOR'.split(),
+    keywords='data analysis modelling least-squares EPR spectroscopy DEER PELDOR'.split(),
     description='Comprehensive package for data analysis of dipolar EPR spectroscopy',
     long_description=open('README.md', encoding='utf-8').read(),
     long_description_content_type="text/markdown",