diff --git a/README.md b/README.md
index 7eaf30b..29defe8 100644
--- a/README.md
+++ b/README.md
@@ -78,6 +78,8 @@ If detected, one of these flags may be set to true.  The rendering engine flag i
   * `ucbrowser` — [`webkit`]
   * `qupzilla` — [`webkit`]
   * `vivaldi` — [`webkit`]
+  * `sleipnir` — [`blink`]
+  * `kMeleon` — [`gecko`]
 
 For all detected browsers the browser version is set in the `version` field.
 
diff --git a/src/bowser.js b/src/bowser.js
index 985dd14..08d9a86 100644
--- a/src/bowser.js
+++ b/src/bowser.js
@@ -96,6 +96,20 @@
         , version: getFirstMatch(/(?:puffin)[\s\/](\d+(?:\.\d+)?)/i)
       }
     }
+    else if (/sleipnir/i.test(ua)) {
+      result = {
+        name: 'Sleipnir'
+        , sleipnir: t
+        , version: getFirstMatch(/(?:sleipnir)[\s\/](\d+(?:\.\d+)+)/i)
+      }
+    }
+    else if (/k-meleon/i.test(ua)) {
+      result = {
+        name: 'K-Meleon'
+        , kMeleon: t
+        , version: getFirstMatch(/(?:k-meleon)[\s\/](\d+(?:\.\d+)+)/i)
+      }
+    }
     else if (windowsphone) {
       result = {
         name: 'Windows Phone'
diff --git a/src/useragents.js b/src/useragents.js
index f1832c9..1d39f2b 100644
--- a/src/useragents.js
+++ b/src/useragents.js
@@ -1214,5 +1214,22 @@ module.exports.useragents = {
       , version: '3.7'
       , x: true
     }
+  }, 'Sleipnir': {
+    'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/39.0.2171.95 Safari/537.36 Sleipnir/6.1.4': {
+      sleipnir: true
+      , blink: true
+      , windows: true
+      , x: true
+      , version: '6.1.4'
+    }
+  }
+  , 'K-Meleon': {
+    'Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20140105 Firefox/24.0 K-Meleon/74.0': {
+      windows: true
+      , kMeleon: true
+      , version: '74.0'
+      , gecko: true
+      , x: true
+    }
   }
 }