diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2fbbe64..15802e6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Bowser Changelog
 
+### 1.9.4 (June 28, 2018)
+- [FIX] Fix NAVER Whale browser detection (#220)
+- [FIX] Fix MZ Browser browser detection (#219)
+- [FIX] Fix Firefox Focus browser detection (#191)
+- [FIX] Fix webOS browser detection (#186)
+
 ### 1.9.3 (March 12, 2018)
 - [FIX] Fix `typings.d.ts` — add `ipad`, `iphone`, `ipod` flags to the interface
 
diff --git a/README.md b/README.md
index 6f758ca..f52c507 100644
--- a/README.md
+++ b/README.md
@@ -40,7 +40,7 @@ bowser.check({msie: "9.0"}); // false
 
 /**
  * specific user agent
- */ 
+ */
 bowser.check({chrome: "45"}, window.navigator.userAgent); // true
 
 /**
@@ -134,6 +134,7 @@ If detected, one of these flags may be set to true.  The rendering engine flag i
   * `vivaldi` — [`blink`]
   * `sleipnir` — [`blink`]
   * `kMeleon` — [`gecko`]
+  * `whale` — [`blink`]
 
 For all detected browsers the browser version is set in the `version` field.
 
diff --git a/bower.json b/bower.json
index fb81bbb..9c42b30 100644
--- a/bower.json
+++ b/bower.json
@@ -11,7 +11,7 @@
     "ender",
     "sniff"
   ],
-  "version": "1.9.3",
+  "version": "1.9.4",
   "homepage": "https://github.com/lancedikson/bowser",
   "scripts": [
     "src/bowser.js"
diff --git a/package.json b/package.json
index ba8e884..6f458cc 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "bowser",
-  "version": "1.9.3",
+  "version": "1.9.4",
   "description": "Lightweight browser detector",
   "keywords": [
     "browser",
diff --git a/src/bowser.js b/src/bowser.js
index 2ec17fb..a06971f 100644
--- a/src/bowser.js
+++ b/src/bowser.js
@@ -36,7 +36,7 @@
       , silk = /silk/i.test(ua)
       , sailfish = /sailfish/i.test(ua)
       , tizen = /tizen/i.test(ua)
-      , webos = /(web|hpw)os/i.test(ua)
+      , webos = /(web|hpw)(o|0)s/i.test(ua)
       , windowsphone = /windows phone/i.test(ua)
       , samsungBrowser = /SamsungBrowser/i.test(ua)
       , windows = !windowsphone && /windows/i.test(ua)
@@ -71,6 +71,20 @@
         , version: versionIdentifier || getFirstMatch(/(?:SamsungBrowser)[\s\/](\d+(\.\d+)?)/i)
       }
     }
+    else if (/Whale/i.test(ua)) {
+      result = {
+        name: 'NAVER Whale browser'
+        , whale: t
+        , version: getFirstMatch(/(?:whale)[\s\/](\d+(?:\.\d+)+)/i)
+      }
+    }
+    else if (/MZBrowser/i.test(ua)) {
+      result = {
+        name: 'MZ Browser'
+        , mzbrowser: t
+        , version: getFirstMatch(/(?:MZBrowser)[\s\/](\d+(?:\.\d+)+)/i)
+      }
+    }
     else if (/coast/i.test(ua)) {
       result = {
         name: 'Opera Coast'
@@ -78,6 +92,13 @@
         , version: versionIdentifier || getFirstMatch(/(?:coast)[\s\/](\d+(\.\d+)?)/i)
       }
     }
+    else if (/focus/i.test(ua)) {
+      result = {
+        name: 'Focus'
+        , focus: t
+        , version: getFirstMatch(/(?:focus)[\s\/](\d+(?:\.\d+)+)/i)
+      }
+    }
     else if (/yabrowser/i.test(ua)) {
       result = {
         name: 'Yandex Browser'
@@ -424,6 +445,9 @@
 		    (result.vivaldi && result.version >= 1.0) ||
         (result.chrome && result.version >= 20) ||
         (result.samsungBrowser && result.version >= 4) ||
+        (result.whale && compareVersions([result.version, '1.0']) === 1) ||
+        (result.mzbrowser && compareVersions([result.version, '6.0']) === 1) ||
+        (result.focus && compareVersions([result.version, '1.0']) === 1) ||
         (result.firefox && result.version >= 20.0) ||
         (result.safari && result.version >= 6) ||
         (result.opera && result.version >= 10.0) ||
diff --git a/src/useragents.js b/src/useragents.js
index 070b9f9..85a61eb 100644
--- a/src/useragents.js
+++ b/src/useragents.js
@@ -1230,6 +1230,14 @@ module.exports.useragents = {
       , mobile: true
       , x: true
     }
+    , 'Mozilla/5.0 (Web0S; Linux/SmartTV) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/38.0.2125.122 Safari/537.36 WebAppManager': {
+      osname: 'WebOS'
+      , blink: true
+      , webos: true
+      , mobile: true
+      , version: ''
+      , x: true
+    }
   }
   , Android: {
     'Mozilla/5.0 (Linux; U; Android 4.4.2; de-de; Nexus 7 Build/KOT49H) AppleWebKit/537.16 (KHTML, like Gecko) Version/4.0 Mobile Safari/537.16': {
@@ -1573,5 +1581,39 @@ module.exports.useragents = {
       , a: true
       , blink: true
     }
+  }, 'NAVER Whale browser' : {
+    'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3112.113 Whale/1.0.40.10 Safari/537.36': {
+      osname: 'macOS'
+      , whale: true
+      , mac: true
+      , osversion: '10.12.6'
+      , version: '1.0.40.10'
+      , blink: true
+      , a: true
+    }
+  }
+  , 'MZ Browser': {
+    'Mozilla/5.0 (Linux; U; Android 6.0; zh-CN; MZ-PRO 6 Build/MRA58K) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/40.0.2214.89 MZBrowser/6.9.511-2018012510 UWS/2.11.0.33 Mobile Safari/537.36': {
+      osname: 'Android'
+      , mzbrowser: true
+      , android: true
+      , mobile: true
+      , osversion: '6.0'
+      , version: '6.9.511'
+      , blink: true
+      , a: true
+    }
+  }
+  , 'Focus' : {
+    'Mozilla/5.0 (Linux; Android 7.1.1) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Focus/1.2.1 Chrome/59.0.3071.125': {
+      osname: 'Android'
+      , focus: true
+      , android: true
+      , tablet: true
+      , osversion: '7.1.1'
+      , version: '1.2.1'
+      , blink: true
+      , a: true
+    }
   }
-}
+};
diff --git a/typings.d.ts b/typings.d.ts
index 55b527a..db1d2a3 100644
--- a/typings.d.ts
+++ b/typings.d.ts
@@ -62,6 +62,7 @@ declare namespace bowser {
         vivaldi: boolean;
         sleipnir: boolean;
         kMeleon: boolean;
+        whale: boolean;
     }
 
     export interface IBowserEngines {
@@ -90,7 +91,7 @@ declare namespace bowser {
         version: string|number;
         /** Name for this operating system. E.g. 'macOS' */
         osname: string;
-        /** Version number for this operating system. E.g. '10.12.6' */ 
+        /** Version number for this operating system. E.g. '10.12.6' */
         osversion: string|number;
     }