diff --git a/setup.py b/setup.py
index 17205504..509cc26d 100644
--- a/setup.py
+++ b/setup.py
@@ -144,7 +144,7 @@ setup(name = 'GPy',
       py_modules = ['GPy.__init__'],
       test_suite = 'GPy.testing',
       long_description=desc,
-      install_requires=['numpy>=1.7', 'scipy>=0.16', 'six', 'paramz'],
+      install_requires=['numpy>=1.7', 'scipy>=0.16', 'six', 'paramz>=0.5.2'],
       extras_require = {'docs':['sphinx'],
                         'optional':['mpi4py',
                                     'ipython>=4.0.0',
@@ -198,4 +198,4 @@ try:
     else:
         print("GPy: User configuration file at location {}".format(user_file))
 except:
-    print("GPy: Could not write user configuration file {}".format(user_file))
\ No newline at end of file
+    print("GPy: Could not write user configuration file {}".format(user_file))