diff --git a/pyerrors/fits.py b/pyerrors/fits.py
index ebe24df5..6c7ea066 100644
--- a/pyerrors/fits.py
+++ b/pyerrors/fits.py
@@ -34,9 +34,9 @@ class Fit_result(Sequence):
     def __len__(self):
         return len(self.fit_parameters)
 
-    def gamma_method(self):
+    def gamma_method(self, **kwargs):
         """Apply the gamma method to all fit parameters"""
-        [o.gamma_method() for o in self.fit_parameters]
+        [o.gamma_method(**kwargs) for o in self.fit_parameters]
 
     def __str__(self):
         my_str = 'Goodness of fit:\n'
diff --git a/setup.py b/setup.py
index 0a648496..31d810fc 100644
--- a/setup.py
+++ b/setup.py
@@ -18,7 +18,7 @@ setup(name='pyerrors',
       license="MIT",
       packages=find_packages(),
       python_requires='>=3.6.0',
-      install_requires=['numpy>=1.16', 'autograd>=1.4', 'numdifftools', 'matplotlib>=3.3', 'scipy', 'iminuit>=2', 'h5py', 'lxml', 'python-rapidjson'],
+      install_requires=['numpy>=1.16', 'autograd>=1.4', 'numdifftools', 'matplotlib>=3.3', 'scipy>=1', 'iminuit>=2', 'h5py', 'lxml', 'python-rapidjson'],
       classifiers=[
           'Development Status :: 5 - Production/Stable',
           'Intended Audience :: Science/Research',