diff --git a/README.md b/README.md
index 2458ebde1..0dda478c1 100644
--- a/README.md
+++ b/README.md
@@ -922,6 +922,16 @@ Name | Type | Required | Description | Example
 apks | Array<string> | yes | The path to APKs. Each path should be the full path to the apk to be installed, or an URL to a remote location. | `['/path/to/local.apk', 'https://github.com/appium/ruby_lib_core/blob/master/test/functional/app/api.apk.zip?raw=true']`
 options | object | no | Installation options. If you want enable `-g` option, you could specify that `{grantPermissions: true}`. `allowTestPackages` corresponds `-t`, `useSdcard` corresponds `-s`, `replace` corresponds `-r` (`-r` is enabled by default), `partialInstall` corresponds `-p`. | `{grantPermissions: true, partialInstall: true}`
 
+### mobile: lock
+
+Lock the device (and optionally unlock it after a certain amount of time). Only simple (e.g. without a password) locks are supported.
+
+#### Arguments
+
+Name | Type | Required | Description | Example
+--- | --- | --- | --- | ---
+seconds | number|string | no | The number of seconds after which to unlock the device. Set to `0` or leave it empty to require manual unlock (e.g. do not block and automatically unlock afterwards). | 5
+
 ### mobile: unlock
 
 Unlocks the device if it is locked. Noop if the device's screen is not locked.
@@ -935,6 +945,14 @@ type | string | yes | The unlock type. See the documentation on [appium:unlockTy
 strategy | string | no | Unlock strategy. See the documentation on [appium:unlockStrategy](#device-locking) capability for more details | uiautomator
 timeoutMs | number | no | Unlock timeout. See the documentation on [appium:unlockSuccessTimeout](#device-locking) capability for more details | 5000
 
+### mobile: isLocked
+
+Determine whether the device is locked.
+
+#### Returned Result
+
+Either `true` or `false`
+
 ### mobile: refreshGpsCache
 
 Sends a request to refresh the GPS cache on the device under test.
diff --git a/lib/commands/general.js b/lib/commands/general.js
index 88fca4530..4e5954530 100644
--- a/lib/commands/general.js
+++ b/lib/commands/general.js
@@ -126,7 +126,9 @@ extensions.executeMobile = async function (mobileCommand, opts = {}) {
 
     installMultipleApks: 'mobileInstallMultipleApks',
 
+    lock: 'lock',
     unlock: 'mobileUnlock',
+    isLocked: 'isLocked',
 
     refreshGpsCache: 'mobileRefreshGpsCache',
 
diff --git a/package.json b/package.json
index a1260918d..6cedfbe54 100644
--- a/package.json
+++ b/package.json
@@ -58,7 +58,7 @@
   "dependencies": {
     "@babel/runtime": "^7.0.0",
     "appium-adb": "^9.11.0",
-    "appium-android-driver": "^5.10.0",
+    "appium-android-driver": "^5.10.4",
     "appium-chromedriver": "^5.3.1",
     "appium-uiautomator2-server": "^5.7.2",
     "asyncbox": "^2.3.1",