diff --git a/requirements.txt b/requirements.txt
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index 0000000..fc70647
--- /dev/null
+++ b/requirements.txt
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+-i https://pypi.org/simple
+numpy==1.17.0
+pandas==0.25.0
+python-dateutil==2.8.0
+python-stdnum==1.11
+pytz==2019.1
+six==1.12.0