Change column values based on index of another dataframe

Question

I have a dataframe with values, which refer to the index of another Dataframe. If I have two dataframes such as:

index	A	B
0	1	hello
1	0	bye
2	1	bye
3	2	ready
4	3	hello

index	value
0	V
1	W
2	X
3	Y
4	Z

I need to replace values in A by value in Table 2 based on index. Result must be:

index	A	B
0	W	hello
1	V	bye
2	W	bye
3	X	ready
4	Y	hello

Any help, please?

Thank you!