diff --git a/grs/__init__.py b/grs/__init__.py
index 31cc56d..f820496 100644
--- a/grs/__init__.py
+++ b/grs/__init__.py
@@ -28,7 +28,10 @@
 
 
 from .best_buy_or_sell import BestFourPoint
-from .fetch_data import Stock
+try:
+    from .fetch_data import Stock
+except ImportError:
+    pass
 from .realtime import RealtimeStock
 from .realtime import RealtimeWeight
 from .tw_time import Countdown
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..5e50bc2
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1,7 @@
+Sphinx
+pip-tools
+pip>=1.4
+pylint
+python-dateutil==1.5
+setuptools>=0.9
+wheel>=0.21