\rowcolor overwrites vertical table border

Question

\documentclass[a4paper]{article}
\usepackage[margin=0.5in]{geometry}
\usepackage[english]{babel}
\usepackage[utf8x]{inputenc}
\usepackage{amsmath}
\usepackage{graphicx}
\usepackage[colorinlistoftodos]{todonotes}
\usepackage{colortbl}
\usepackage{etoolbox}
\usepackage{hhline}

%--------------------------------------------------------%
%   BEGIN DOCUMENT
%--------------------------------------------------------%

\begin{document}
\begin{table}[]
\centering
\caption{Fruits!}\tabularnewline
\label{my-label}
\begin{tabular}{|c|c|c|c|c|}\hline
\multicolumn{5}{|c|}{\textbf{Fruits}}                                                                                 \\ \hline
     & \multicolumn{2}{c|}{Billy}                          & \multicolumn{2}{c|}{Jean}                     \\ \hline
Rank & Item                                             & Weight & Item                                      & Weight \\ \hline
\rowcolor[gray]{.9} 1    & Apples.         & 0.331  & Oranges.  & 0.423  \\
2    & Bananas.        & 0.170  & Strawberries. & 0.423  \\
\end{tabular}
\end{table}
%--------------------------------------------------------%
%   END DOCUMENT
%--------------------------------------------------------%

\end{document}

I'm using \rowcolor to color in certain rows of my table, but I notice that this causes some of the vertical borders to be covered. I've tried using the package hhline but it doesn't seem to help.