diff --git a/src/_tox b/src/_tox
index efd0549..17231e7 100644
--- a/src/_tox
+++ b/src/_tox
@@ -28,15 +28,19 @@ _arguments \
   '(- 1 *)--version[show version and exit]' \
   '(- 1 *)'{-h,--help}'[show help options]' \
   '(- 1 *)'{--hi,--help-ini}'[show help about ini-names]' \
-  '*-v[increase verbosity of reporting output]' \
+  '*'{-v,--verbose}'[increase verbosity of reporting output]' \
   '*-q[progressively silence reporting output]' \
   '(- 1 *)--showconfig[show configuration information for all environments]' \
   '(- 1 *)'{-l,--listenvs}'[show list of test environments]' \
   '(- 1 *)'{-a,--listenvs-all}'[show list of all defined environments]' \
   '-c[config file name or directory with "tox.ini" file]:config path:_files -g "*.ini"' \
   '-e[work against specified environments]: :_tox_envs_list' \
+  "--devenv[sets up a development environment at ENVDIR based on the env's tox configuration specified by '-e' ]: :" \
   '--notest[skip invoking test commands]' \
   '--sdistonly[only perform the sdist packaging activity]' \
+  '--skip-pkg-install[skip package installation for this run]' \
+  '(-p --parallel)'{-p,--parallel}'[run tox environments in parallel]: :' \
+  '(-o --parallel-live)'{-o,--parallel-live}'[connect to stdout while running environments]' \
   '--parallel--safe-build[ensure two tox builds can run in parallel]' \
   '--installpkg[ensure two tox builds can run in parallel]:package path:_files -/' \
   '--develop[install package in the venv using "setup.py develop"]' \
@@ -44,11 +48,13 @@ _arguments \
   '--pre[install pre-releases and development versions of dependencies]' \
   '(-r --recreate)'{-r,--recreate}'[force recreation of virtual environments]' \
   '--result-json[write a json file with detailed information about all commands and results involved]:JSON file path:_files -g "*.json"' \
+  '--discover[for python discovery first try the python executables under these paths]:' \
   '--hashseed[set PYTHONHASHSEED to SEED before running commands]:seed' \
   '*--force-dep[forces a certain version of one of the dependencies when configuring the virtual environment]:pip requirement' \
   '--sitepackages[override sitepackages setting to True in all envs]' \
   '--alwayscopy[override alwayscopy setting to True in all envs]' \
-  '--skip-missing-interpreters[do not fail tests for missing interpreters]: :(config true false)' \
+  '--no-provision[do not perform provision, but fail and if a path was provided write provision metadata as JSON to it]:JSON file path:_files -g "*.json"' \
+  '(-s --skip-missing-interpreters)'{-s,--skip-missing-interpreters}'[do not fail tests for missing interpreters]: :(config true false)' \
   '--workdir[tox working directory]: :_files -/' \
   '*: :_guard "^-*" command positional substitution arguments'