snapでインストールしたコマンドがzshでPATH通ってない

% sudo snap install --classic heroku
heroku v7.21.0 from Heroku✓ installed

% heroku help
zsh: command not found: heroku

% snap version
snap    2.37.2
snapd   2.37.2
series  16
ubuntu  18.04
kernel  4.15.0-1019-aws

# Expand $PATH to include the directory where snappy applications go.
snap_bin_path="/snap/bin"
if [ -n "${PATH##*${snap_bin_path}}" -a -n "${PATH##*${snap_bin_path}:*}" ]; then
    export PATH=$PATH:${snap_bin_path}
fi