diff --git a/lib/versioned/^4.0.0-alpha.1/index.js b/lib/versioned/^4.0.0-alpha.1/index.js
deleted file mode 100644
index c9c5ffc3..00000000
--- a/lib/versioned/^4.0.0-alpha.1/index.js
+++ /dev/null
@@ -1,97 +0,0 @@
-'use strict';
-
-var fs = require('fs');
-
-var log = require('gulplog');
-var stdout = require('mute-stdout');
-var chalk = require('chalk');
-
-var exit = require('../../shared/exit');
-var tildify = require('../../shared/tildify');
-
-var logTasks = require('../../shared/log/tasks');
-var logEvents = require('../^4.0.0/log/events');
-var logSyncTask = require('../^4.0.0/log/sync-task');
-var logTasksSimple = require('../^4.0.0/log/tasks-simple');
-var registerExports = require('../../shared/register-exports');
-
-var copyTree = require('../../shared/log/copy-tree');
-var requireOrImport = require('../../shared/require-or-import');
-
-function execute(env) {
-  var opts = env.config.flags;
-
-  var tasks = opts._;
-  var toRun = tasks.length ? tasks : ['default'];
-
-  if (opts.tasksSimple || opts.tasks || opts.tasksJson) {
-    // Mute stdout if we are listing tasks
-    stdout.mute();
-  }
-
-  var gulpInst = require(env.modulePath);
-  logEvents(gulpInst);
-  logSyncTask(gulpInst, opts);
-
-  // This is what actually loads up the gulpfile
-  requireOrImport(env.configPath, function(err, exported) {
-    // Before import(), if require() failed we got an unhandled exception on the module level.
-    // So console.error() & exit() were added here to mimic the old behavior as close as possible.
-    if (err) {
-      console.error(err);
-      exit(1);
-    }
-
-    registerExports(gulpInst, exported);
-
-    // Always unmute stdout after gulpfile is required
-    stdout.unmute();
-
-    var tree;
-    if (opts.tasksSimple) {
-      return logTasksSimple(gulpInst.tree());
-    }
-    if (opts.tasks) {
-      tree = {};
-      if (env.config.description && typeof env.config.description === 'string') {
-        tree.label = env.config.description;
-      } else {
-        tree.label = 'Tasks for ' + chalk.magenta(tildify(env.configPath));
-      }
-      tree.nodes = gulpInst.tree({ deep: true });
-      return logTasks(tree, opts, function(taskname) {
-        return gulpInst.task(taskname);
-      });
-    }
-    if (opts.tasksJson) {
-      tree = {};
-      if (env.config.description && typeof env.config.description === 'string') {
-        tree.label = env.config.description;
-      } else {
-        tree.label = 'Tasks for ' + tildify(env.configPath);
-      }
-      tree.nodes = gulpInst.tree({ deep: true });
-
-      var output = JSON.stringify(copyTree(tree, opts));
-      if (typeof opts.tasksJson === 'boolean' && opts.tasksJson) {
-        return console.log(output);
-      }
-      return fs.writeFileSync(opts.tasksJson, output, 'utf-8');
-    }
-    try {
-      log.info('Using gulpfile', chalk.magenta(tildify(env.configPath)));
-      var runMethod = opts.series ? 'series' : 'parallel';
-      gulpInst[runMethod](toRun)(function(err) {
-        if (err) {
-          exit(1);
-        }
-      });
-    } catch (err) {
-      log.error(chalk.red(err.message));
-      log.error('To list available tasks, try running: gulp --tasks');
-      exit(1);
-    }
-  });
-}
-
-module.exports = execute;
diff --git a/lib/versioned/^4.0.0-alpha.2/index.js b/lib/versioned/^4.0.0-alpha.2/index.js
deleted file mode 100644
index 3d1763a6..00000000
--- a/lib/versioned/^4.0.0-alpha.2/index.js
+++ /dev/null
@@ -1,97 +0,0 @@
-'use strict';
-
-var fs = require('fs');
-
-var log = require('gulplog');
-var stdout = require('mute-stdout');
-var chalk = require('chalk');
-
-var exit = require('../../shared/exit');
-var tildify = require('../../shared/tildify');
-
-var logTasks = require('../../shared/log/tasks');
-var logEvents = require('../^4.0.0/log/events');
-var logSyncTask = require('../^4.0.0/log/sync-task');
-var logTasksSimple = require('../^4.0.0/log/tasks-simple');
-var registerExports = require('../../shared/register-exports');
-
-var copyTree = require('../../shared/log/copy-tree');
-var getTask = require('../^4.0.0/log/get-task');
-var requireOrImport = require('../../shared/require-or-import');
-
-function execute(env) {
-  var opts = env.config.flags;
-
-  var tasks = opts._;
-  var toRun = tasks.length ? tasks : ['default'];
-
-  if (opts.tasksSimple || opts.tasks || opts.tasksJson) {
-    // Mute stdout if we are listing tasks
-    stdout.mute();
-  }
-
-  var gulpInst = require(env.modulePath);
-  logEvents(gulpInst);
-  logSyncTask(gulpInst, opts);
-
-  // This is what actually loads up the gulpfile
-  requireOrImport(env.configPath, function(err, exported) {
-    // Before import(), if require() failed we got an unhandled exception on the module level.
-    // So console.error() & exit() were added here to mimic the old behavior as close as possible.
-    if (err) {
-      console.error(err);
-      exit(1);
-    }
-
-    registerExports(gulpInst, exported);
-
-    // Always unmute stdout after gulpfile is required
-    stdout.unmute();
-
-    var tree;
-    if (opts.tasksSimple) {
-      tree = gulpInst.tree();
-      return logTasksSimple(tree.nodes);
-    }
-    if (opts.tasks) {
-      tree = gulpInst.tree({ deep: true });
-      if (env.config.description && typeof env.config.description === 'string') {
-        tree.label = env.config.description;
-      } else {
-        tree.label = 'Tasks for ' + chalk.magenta(tildify(env.configPath));
-      }
-
-      return logTasks(tree, opts, getTask(gulpInst));
-    }
-    if (opts.tasksJson) {
-      tree = gulpInst.tree({ deep: true });
-      if (env.config.description && typeof env.config.description === 'string') {
-        tree.label = env.config.description;
-      } else {
-        tree.label = 'Tasks for ' + tildify(env.configPath);
-      }
-
-      var output = JSON.stringify(copyTree(tree, opts));
-
-      if (typeof opts.tasksJson === 'boolean' && opts.tasksJson) {
-        return console.log(output);
-      }
-      return fs.writeFileSync(opts.tasksJson, output, 'utf-8');
-    }
-    try {
-      log.info('Using gulpfile', chalk.magenta(tildify(env.configPath)));
-      var runMethod = opts.series ? 'series' : 'parallel';
-      gulpInst[runMethod](toRun)(function(err) {
-        if (err) {
-          exit(1);
-        }
-      });
-    } catch (err) {
-      log.error(chalk.red(err.message));
-      log.error('To list available tasks, try running: gulp --tasks');
-      exit(1);
-    }
-  });
-}
-
-module.exports = execute;