diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..9c558e3
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1 @@
+.
diff --git a/setup.py b/setup.py
index 2267488..3343ce5 100644
--- a/setup.py
+++ b/setup.py
@@ -1,13 +1,12 @@
 from setuptools import setup
 from Cython.Build import cythonize
 import numpy as np
-from stocproc import version_full
 
 author      = u"Richard Hartmann"
 authors     = [author]
 description = 'Generate continuous time stationary stochastic processes from a given auto correlation function.'
 name        = 'stocproc'
-version = version_full()
+version = '1.0.0'
 
 if __name__ == "__main__":
     setup(
@@ -29,8 +28,9 @@ if __name__ == "__main__":
             'Topic :: Utilities',
             'Intended Audience :: Researcher'],
         platforms=['ALL'],
-        install_requires=['fcSpline>=0.1'],
+        setup_requires=['cython>=0.29'],
+        install_requires=['fcSpline>=0.1', 'numpy>=1.20', 'scipy>=1.6', 'mpmath>=1.2.0'],
         dependency_links=['https://raw.githubusercontent.com/cimatosa/fcSpline/master/egg/fcSpline-0.1-py3.4-linux-x86_64.egg'],
         ext_modules = cythonize(["stocproc/stocproc_c.pyx"]),
         include_dirs = [np.get_include()],
-    )
\ No newline at end of file
+    )
diff --git a/stocproc/__init__.py b/stocproc/__init__.py
index b5e8bbe..a192b4a 100644
--- a/stocproc/__init__.py
+++ b/stocproc/__init__.py
@@ -14,10 +14,7 @@ import sys
 if sys.version_info.major < 3:
     raise SystemError("no support for Python 2")
 
-try:
-    from .stocproc import loggin_setup
-    from .stocproc import StocProc_FFT
-    from .stocproc import StocProc_KLE
-    from .stocproc import StocProc_TanhSinh
-except ImportError:
-    print("WARNING: Import Error occurred, parts of the package may be not available")
+from .stocproc import loggin_setup
+from .stocproc import StocProc_FFT
+from .stocproc import StocProc_KLE
+from .stocproc import StocProc_TanhSinh