diff --git a/requirements.txt b/requirements.txt
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index 0000000000000000000000000000000000000000..021ed42f8f5ed6800c92bdd7cba5c8f5b7aa4baa
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+lxml==4.5.0
+numpy==1.18.1
+opcua==0.98.9
+python-dateutil==2.8.1
+pytz==2019.3
+six==1.14.0