diff --git a/setup.py b/setup.py
index 3705c18..f70fb47 100644
--- a/setup.py
+++ b/setup.py
@@ -30,7 +30,7 @@
         'numpy>=1.13.1',
         'scipy>=0.19.1',
         'pandas>=0.21.1',
-        'scikit-learn>=0.19.1',
+        'scikit-learn==0.19.1',
         'numba>=0.35.0',
         'pywavelets>=0.5.2',
         'matplotlib>=2.1.0',