Uhm… no, that is because you are not tracking the changes there. If you put the function in a file (or module), Revise tracks the changes:
julia> using Revise
julia> includet("./teste.jl")
julia> f(1)
1
julia> f(1)
2
where teste.jl is:
#f(x::Int) = 1
f(x) = 2