d = {\'Dates\':[pd.Timestamp(\'2013-01-02\'), pd.Timestamp(\'2013-01-03\'), pd.Timestamp(\'2013-01-04\')], \'Num1\':[1,2,3], \'
This worked for me.
df['Dates'].isin(np.array([pd.Timestamp('2013-01-04')]).astype('datetime64[ns]'))
I know that it is a bit verbose. But just in case you need to make it work this would help. Refer to https://github.com/pydata/pandas/issues/5021 for more details.