Can't use dplyr joins on two date columns

The reason I can't merge is how the two Date objects are stored. Thanks to this issue I decided to check the structure of how the two objects are stored and sure enough one is stored as an integer and one is stored as a numeric:

> dput(df1$DateInfo[1])
structure(16373, class = "Date")
> dput(df2$DateInfo[1])
structure(16372L, class = "Date")

It appears that the data that was pulled form a DB through the dplyr sql functions is stored as a numeric while the data from a csv is stored as an integer. I don't know why that won't let dplyr join on them while merge can or why it happens in the first place but I think this specific question is answered.