diff --git a/src/utils/BrowserSupportsPush.ts b/src/utils/BrowserSupportsPush.ts
index b1d07e02b..6eb4618c3 100644
--- a/src/utils/BrowserSupportsPush.ts
+++ b/src/utils/BrowserSupportsPush.ts
@@ -35,7 +35,7 @@ export function isPushNotificationsSupported() {
     return false;
   }
 
-  if (browser.firefox && Number(browser.version) >= 44) {
+  if (browser.firefox && Number(browser.version) >= 47) {
     // check for Firefox Extended Support Release (ESR)
     // thanks to https://stackoverflow.com/questions/42674004/how-to-detect-difference-between-firefox-and-firefox-esr-in-javascript
     const esrBuildIds = [
@@ -93,7 +93,7 @@ export function isPushNotificationsSupported() {
     return true;
   }
 
-  if ((browser.chrome || (<any>browser).chromium) && Number(browser.version) >= 42) {
+  if ((browser.chrome || (<any>browser).chromium) && Number(browser.version) >= 54) {
     return true;
   }
 
@@ -101,7 +101,9 @@ export function isPushNotificationsSupported() {
   // 17.3.1.838 supports VAPID on Mac OS X
     return true;
 
-  // https://www.chromestatus.com/feature/5416033485586432
+  // https://help.opera.com/en/opera-version-history/
+  // Opera's Android versions do not match up with it's desktop versions.
+  //    Example: Desktop Opera 58 is Android Opera 50
   if (browser.opera && (browser.mobile || browser.tablet) && Number(browser.version) >= 37 ||
     browser.opera && Number(browser.version) >= 42)
     return true;
diff --git a/test/support/sdk/TestEnvironment.ts b/test/support/sdk/TestEnvironment.ts
index 8d4b719f1..bba52d864 100644
--- a/test/support/sdk/TestEnvironment.ts
+++ b/test/support/sdk/TestEnvironment.ts
@@ -49,25 +49,26 @@ export enum BrowserUserAgent {
   FirefoxTabletUnsupported = "Mozilla/5.0 (Android 4.4; Mobile ; rv:47.0) Gecko/47.0 Firefox/47.0",
   FirefoxMobileSupported = "Mozilla/5.0 (Android 4.4; Mobile; rv:44.0) Gecko/48.0 Firefox/48.0",
   FirefoxTabletSupported = "Mozilla/5.0 (Android 4.4; Mobile ; rv:44.0) Gecko/48.0 Firefox/48.0",
-  FirefoxWindowsSupported = "Mozilla/5.0 (Windows NT x.y; WOW64; rv:44.0) Gecko/20100101 Firefox/44.0",
-  FirefoxMacSupported = "Mozilla/5.0 (Macintosh; Intel Mac OS X x.y; rv:44.0) Gecko/20100101 Firefox/44.0",
-  FirefoxLinuxSupported = "Mozilla/5.0 (X11; Linux i686 on x86_64; rv:44.0) Gecko/20100101 Firefox/44.0",
+  FirefoxWindowsUnSupported = "Mozilla/5.0 (Windows NT x.y; WOW64; rv:44.0) Gecko/20100101 Firefox/44.0",
+  FirefoxWindowsSupported = "Mozilla/5.0 (Windows NT x.y; WOW64; rv:47.0) Gecko/20100101 Firefox/47.0",
+  FirefoxMacSupported = "Mozilla/5.0 (Macintosh; Intel Mac OS X x.y; rv:47.0) Gecko/20100101 Firefox/47.0",
+  FirefoxLinuxSupported = "Mozilla/5.0 (X11; Linux i686 on x86_64; rv:47.0) Gecko/20100101 Firefox/47.0",
   SafariUnsupportedMac= "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10) AppleWebKit/538.32 (KHTML, like Gecko) Version/7.0 Safari/538.4",
   SafariSupportedMac= "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10) AppleWebKit/538.32 (KHTML, like Gecko) Version/7.1 Safari/538.4",
   SafariSupportedMac121= "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/12.1 Safari/605.1.15",
   FacebookBrowseriOS = "Mozilla/5.0 (iPhone; CPU iPhone OS 8_2 like Mac OS X) AppleWebKit/600.1.4 (KHTML, like Gecko) Mobile/12D508 [FBAN/FBIOS;FBAV/27.0.0.10.12;FBBV/8291884;FBDV/iPhone7,1;FBMD/iPhone;FBSN/iPhone OS;FBSV/8.2;FBSS/3;]",
   FacebookBrowserAndroid = "Mozilla/5.0 (Linux; Android 5.1; Archos Diamond S Build/LMY47D; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/51.0.2704.81 Mobile Safari/537.36 [FB_IAB/FB4A;FBAV/87.0.0.17.79;]",
-  ChromeAndroidSupported = "Mozilla/5.0 (Linux; Android 4.0.4; Galaxy Nexus Build/IMM76B) AppleWebKit/535.19 (KHTML, like Gecko) Chrome/42 Mobile Safari/535.19",
-  ChromeWindowsSupported = "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/42.0.2228.0 Safari/537.36",
-  ChromeMacSupported = "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/42.0.1636.0 Safari/537.36",
+  ChromeAndroidSupported = "Mozilla/5.0 (Linux; Android 4.0.4; Galaxy Nexus Build/IMM76B) AppleWebKit/535.19 (KHTML, like Gecko) Chrome/54 Mobile Safari/535.19",
+  ChromeWindowsSupported = "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2228.0 Safari/537.36",
+  ChromeMacSupported = "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.1636.0 Safari/537.36",
   ChromeMacSupported69 = "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.81 Safari/537.36",
-  ChromeLinuxSupported = "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/42.0.1636.0 Safari/537.36",
-  ChromeTabletSupported = "Mozilla/5.0 (Linux; Android 4.3; Nexus 10 Build/JWR66Y) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/42.0.1547.72 Safari/537.36",
+  ChromeLinuxSupported = "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.1636.0 Safari/537.36",
+  ChromeTabletSupported = "Mozilla/5.0 (Linux; Android 4.3; Nexus 10 Build/JWR66Y) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.1547.72 Safari/537.36",
   ChromeAndroidUnsupported = "Mozilla/5.0 (Linux; Android 4.0.4; Galaxy Nexus Build/IMM76B) AppleWebKit/535.19 (KHTML, like Gecko) Chrome/41 Mobile Safari/535.19",
-  ChromeWindowsUnsupported = "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2228.0 Safari/537.36",
-  ChromeMacUnsupported = "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.1636.0 Safari/537.36",
+  ChromeWindowsUnsupported = "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.2228.0 Safari/537.36",
+  ChromeMacUnsupported = "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.1636.0 Safari/537.36",
   ChromeLinuxUnsupported = "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.1636.0 Safari/537.36",
-  ChromeTabletUnsupported = "Mozilla/5.0 (Linux; Android 4.3; Nexus 10 Build/JWR66Y) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.1547.72 Safari/537.36",
+  ChromeTabletUnsupported = "Mozilla/5.0 (Linux; Android 4.3; Nexus 10 Build/JWR66Y) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.1547.72 Safari/537.36",
   YandexDesktopSupportedHigh = "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/30.0.1599.12785 YaBrowser/17.1.0.2036 Safari/537.36",
   YandexDesktopSupportedLow = "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/30.0.1599.12785 YaBrowser/15.12.1.6475 Safari/537.36",
   YandexMobileSupported = "Mozilla/5.0 (Linux; Android 7.1.1; Nexus 6P Build/N4F26T) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.95 YaBrowser/17.1.2.339.00 Mobile Safari/537.36",
diff --git a/test/unit/modules/browserSupport.ts b/test/unit/modules/browserSupport.ts
index 13dcfae76..0f68344fb 100644
--- a/test/unit/modules/browserSupport.ts
+++ b/test/unit/modules/browserSupport.ts
@@ -64,6 +64,7 @@ test('should not support specific browser environments', async t => {
   shouldNotSupport(t, BrowserUserAgent.EdgeUnsupported2);
   shouldNotSupport(t, BrowserUserAgent.IE11);
 
+  shouldNotSupport(t, BrowserUserAgent.FirefoxWindowsUnSupported);
   shouldNotSupport(t, BrowserUserAgent.FirefoxMobileUnsupported);
   shouldNotSupport(t, BrowserUserAgent.FirefoxTabletUnsupported);