update python dependencies

requirements.txt

@@ -2,5 +2,6 @@ six
 pykerberos
 pyRXP
 pyOpenSSL >= 0.14
+ligo-segments
 lscsoft-glue >= 1.55.0
 gwdatafind

setup.py

@@ -134,8 +134,14 @@ setup(name=PACKAGENAME,
       ext_modules=[],
       scripts=scripts,
       setup_requires=['setuptools>=8.0'],
-      install_requires=['pyRXP', 'lscsoft-glue>=1.55.0', 'pyOpenSSL>=0.14',
-                        'six', 'gwdatafind'],
+      install_requires=[
+          'pyRXP',
+          'ligo-segments',
+          'lscsoft-glue>=1.55.0',
+          'pyOpenSSL>=0.14',
+          'six',
+          'gwdatafind',
+      ],
       provides=[PACKAGENAME],
       author=AUTHOR,
       author_email=AUTHOR_EMAIL,