diff --git a/src/ua-parser.js b/src/ua-parser.js
index aa5f719..8e1f714 100755
--- a/src/ua-parser.js
+++ b/src/ua-parser.js
@@ -232,7 +232,8 @@
             /\bb[ai]*d(?:uhd|[ub]*[aekoprswx]{5,6})[\/ ]?([\w\.]+)/i            // Baidu
             ], [VERSION, [NAME, 'Baidu']], [
             /(kindle)\/([\w\.]+)/i,                                             // Kindle
-            /(lunascape|maxthon|netfront|jasmine|blazer)[\/ ]?([\w\.]*)/i,      // Lunascape/Maxthon/Netfront/Jasmine/Blazer
+            /(lunascape|maxthon|netfront|jasmine|blazer|sleipnir)[\/ ]?([\w\.]*)/i,      
+                                                                                // Lunascape/Maxthon/Netfront/Jasmine/Blazer/Sleipnir
             // Trident based
             /(avant|iemobile|slim)\s?(?:browser)?[\/ ]?([\w\.]*)/i,             // Avant/IEMobile/SlimBrowser
             /(?:ms|\()(ie) ([\w\.]+)/i,                                         // Internet Explorer
@@ -349,8 +350,8 @@
             /(mozilla)\/([\w\.]+) .+rv\:.+gecko\/\d+/i,                         // Mozilla
 
             // Other
-            /(polaris|lynx|dillo|icab|doris|amaya|w3m|netsurf|sleipnir|obigo|mosaic|(?:go|ice|up)[\. ]?browser)[-\/ ]?v?([\w\.]+)/i,
-                                                                                // Polaris/Lynx/Dillo/iCab/Doris/Amaya/w3m/NetSurf/Sleipnir/Obigo/Mosaic/Go/ICE/UP.Browser
+            /(polaris|lynx|dillo|icab|doris|amaya|w3m|netsurf|obigo|mosaic|(?:go|ice|up)[\. ]?browser)[-\/ ]?v?([\w\.]+)/i,
+                                                                                // Polaris/Lynx/Dillo/iCab/Doris/Amaya/w3m/NetSurf/Obigo/Mosaic/Go/ICE/UP.Browser
             /(links) \(([\w\.]+)/i,                                             // Links
             /panasonic;(viera)/i                                                // Panasonic Viera
             ], [NAME, VERSION], [
diff --git a/test/browser-test.json b/test/browser-test.json
index 5e5e9b1..984c95b 100644
--- a/test/browser-test.json
+++ b/test/browser-test.json
@@ -1457,6 +1457,37 @@
             "version" : "2.0",
             "major"   : "2"
         }
+    },    
+    {
+        "desc"    : "Sleipnir",
+        "ua"      : "Mozilla/5.0 (Linux; Android 10; SOV37 Build/52.1.C.0.220; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/123.0.6312.120 Mobile Safari/537.36 Sleipnir/3.7.5",
+        "expect"  :
+        {
+            "name"    : "Sleipnir",
+            "version" : "3.7.5",
+            "major"   : "3"
+        }
+    },
+
+    {
+        "desc"    : "Sleipnir",
+        "ua"      : "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; Sleipnir 2.8.4)",
+        "expect"  :
+        {
+            "name"    : "Sleipnir",
+            "version" : "2.8.4",
+            "major"   : "2"
+        }
+    },
+    {
+        "desc"    : "Sleipnir",
+        "ua"      : "Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; Trident/4.0; .NET CLR 1.1.4322; .NET CLR 2.0.50727; InfoPath.1; .NET CLR 3.0.04506.648; .NET CLR 3.5.21022) Sleipnir/2.8.4",
+        "expect"  :
+        {
+            "name"    : "Sleipnir",
+            "version" : "2.8.4",
+            "major"   : "2"
+        }
     },
     {
         "desc"    : "SlimBrowser",