Update all values in a map using values from another map

How can I update all values in a map, using the values from corresponding keys of another map? For example I have the two maps bellow:

map = %{"December 2021" => 0, "November 2021" => 0, "October 2021" => 0}
map_2 = %{"December 2021" => 7, "November 2021" => 6}

And I want to update all values from map with the corresponding values from map_2, so in the end:

map = %{"December 2021" => 7, "November 2021" => 6, "October 2021" => 0}

I have tried:

Enum.map(map_2, fn {key, value} -> %{map | k => v} end)

I have also tried the code above with other functions like Map.update!/3 and similar ones, but they all return a list with maps for each iteration of Enum.map.

Does someone have any idea on how to do it?

Thanks a lot in advance!