diff --git a/src/utils.js b/src/utils.js
index 2ce7cb6..7e36f8f 100644
--- a/src/utils.js
+++ b/src/utils.js
@@ -77,18 +77,20 @@ export default class Utils {
     const v = version.split('.').splice(0, 2).map(s => parseInt(s, 10) || 0);
     v.push(0);
     if (v[0] !== 10) return undefined;
-    if (v[1] === 5) return 'Leopard';
-    if (v[1] === 6) return 'Snow Leopard';
-    if (v[1] === 7) return 'Lion';
-    if (v[1] === 8) return 'Mountain Lion';
-    if (v[1] === 9) return 'Mavericks';
-    if (v[1] === 10) return 'Yosemite';
-    if (v[1] === 11) return 'El Capitan';
-    if (v[1] === 12) return 'Sierra';
-    if (v[1] === 13) return 'High Sierra';
-    if (v[1] === 14) return 'Mojave';
-    if (v[1] === 15) return 'Catalina';
-    return undefined;
+    switch (v[1]) {
+      case 5: return 'Leopard';
+      case 6: return 'Snow Leopard';
+      case 7: return 'Lion';
+      case 8: return 'Mountain Lion';
+      case 9: return 'Mavericks';
+      case 10: return 'Yosemite';
+      case 11: return 'El Capitan';
+      case 12: return 'Sierra';
+      case 13: return 'High Sierra';
+      case 14: return 'Mojave';
+      case 15: return 'Catalina';
+      default: return undefined;
+    }
   }
 
   /**
diff --git a/test/acceptance/useragentstrings.yml b/test/acceptance/useragentstrings.yml
index 474ba9a..403275a 100644
--- a/test/acceptance/useragentstrings.yml
+++ b/test/acceptance/useragentstrings.yml
@@ -207,6 +207,21 @@
           type: "desktop"
         engine:
           name: "Blink"
+    -
+      ua: "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.112 Safari/537.36"
+      spec:
+        browser:
+          name: "Chrome"
+          version: "49.0.2623.112"
+        os:
+          name: "macOS"
+          version: "10.7.5"
+          versionName: "Lion"
+        platform:
+          type: "desktop"
+          vendor: "Apple"
+        engine:
+          name: "Blink"
     -
       ua: "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_6_7) AppleWebKit/534.24 (KHTML, like Gecko) Chrome/11.0.696.57 Safari/534.24"
       spec:
@@ -797,6 +812,22 @@
         engine:
           name: "WebKit"
           version: "531.21.10"
+    -
+      ua: "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_3) AppleWebKit/537.75.14 (KHTML, like Gecko) Version/7.0.3 Safari/7046A194A"
+      spec:
+        browser:
+          name: "Safari"
+          version: "7.0.3"
+        os:
+          name: "macOS"
+          version: "10.9.3"
+          versionName: "Mavericks"
+        platform:
+          type: "desktop"
+          vendor: "Apple"
+        engine:
+          name: "WebKit"
+          version: "537.75.14"
     -
       ua: "Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_5_7; de-de) AppleWebKit/525.28.3 (KHTML, like Gecko) Version/3.2.3 Safari/525.28.3"
       spec:
@@ -876,6 +907,22 @@
         engine:
           name: "WebKit"
           version: "532.9"
+    -
+      ua: "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13) AppleWebKit/604.1.31 (KHTML, like Gecko) Version/11.0 Safari/604.1.31"
+      spec:
+        browser:
+          name: "Safari"
+          version: "11.0"
+        os:
+          name: "macOS"
+          version: "10.13"
+          versionName: "High Sierra"
+        platform:
+          type: "desktop"
+          vendor: "Apple"
+        engine:
+          name: "WebKit"
+          version: "604.1.31"
     -
       ua: "Mozilla/5.0 (Macintosh; U; PPC Mac OS X 10_5_2; en-gb) AppleWebKit/526+ (KHTML, like Gecko) Version/3.1 iPhone"
       spec:
@@ -2098,6 +2145,21 @@
         engine:
           name: "WebKit"
           version: "533.1"
+    -
+      ua: "Mozilla/5.0 (Linux; U; Android 2.2; en-us; GT-I5800 Build/FROYO) AppleWebKit/533.1 (KHTML, like Gecko) Version/4.0 Mobile Safari/533.1"
+      spec:
+        browser:
+          name: "Android Browser"
+          version: "4.0"
+        os:
+          name: "Android"
+          version: "2.2"
+          versionName: "Froyo"
+        platform:
+          type: "mobile"
+        engine:
+          name: "WebKit"
+          version: "533.1"
     -
       ua: "Mozilla/5.0 (Linux; U; Android 1.6; ar-us; SonyEricssonX10i Build/R2BA026) AppleWebKit/528.5+ (KHTML, like Gecko) Version/3.1.2 Mobile Safari/525.20.1"
       spec:
diff --git a/test/unit/utils.js b/test/unit/utils.js
index e4490db..b41843e 100644
--- a/test/unit/utils.js
+++ b/test/unit/utils.js
@@ -20,13 +20,16 @@ test('getWindowsVersionName', (t) => {
 
 test('getMacOSVersionName', (t) => {
   t.is(getMacOSVersionName('10.14.5'), 'Mojave');
+  t.is(getMacOSVersionName('10.15'), 'Catalina');
+  t.is(getMacOSVersionName('10.999999'), void 0);
   t.is(getMacOSVersionName('XXX'), void 0);
 });
 
 test('getAndroidVersionName', (t) => {
+  t.is(getAndroidVersionName('1.0'), void 0);
   t.is(getAndroidVersionName('8.0'), 'Oreo');
   t.is(getAndroidVersionName('9'), 'Pie');
-  t.is(getWindowsVersionName('XXX'), void 0);
+  t.is(getAndroidVersionName('XXX'), void 0);
 });
 
 test('compareVersions', (t) => {