R crop raster using polygon keeping cells along the border

I'm trying to crop this raster over Italy but the output seems to miss some of the cells along the border. See areas highlighted in red in the picture below:

How can I keep all the cells that cross the borders?

Below is my script:

library(raster)

# Load data
x <- raster("x.nc")
IT <- getData(name = "GADM", country = "Italy", level = 0)

# Mask and crop
x_masked <- mask(x, IT)
x_masked_cropped <- crop(x_masked, IT)

# Plot
plot(x_masked_cropped)
plot(IT, add = T)