diff --git a/platform/chromium/manifest.json b/platform/chromium/manifest.json
index f9ab901be..aa83f5f04 100644
--- a/platform/chromium/manifest.json
+++ b/platform/chromium/manifest.json
@@ -70,7 +70,7 @@
   },
   "incognito": "split",
   "manifest_version": 2,
-  "minimum_chrome_version": "61.0",
+  "minimum_chrome_version": "66.0",
   "name": "uBlock Origin",
   "options_ui": {
     "page": "dashboard.html",
diff --git a/platform/firefox/manifest.json b/platform/firefox/manifest.json
index 621663fc7..70b4dbd56 100644
--- a/platform/firefox/manifest.json
+++ b/platform/firefox/manifest.json
@@ -15,7 +15,7 @@
   "browser_specific_settings": {
     "gecko": {
       "id": "uBlock0@raymondhill.net",
-      "strict_min_version": "60.0"
+      "strict_min_version": "68.0"
     }
   },
   "commands": {
diff --git a/platform/opera/manifest.json b/platform/opera/manifest.json
index 2545566ee..ac669271d 100644
--- a/platform/opera/manifest.json
+++ b/platform/opera/manifest.json
@@ -69,7 +69,7 @@
   },
   "incognito": "split",
   "manifest_version": 2,
-  "minimum_opera_version": "48.0",
+  "minimum_opera_version": "53.0",
   "name": "uBlock Origin",
   "options_page": "dashboard.html",
   "permissions": [
diff --git a/src/js/start.js b/src/js/start.js
index 623ec3bd3..b695833a3 100644
--- a/src/js/start.js
+++ b/src/js/start.js
@@ -487,19 +487,10 @@ contextMenu.update();
 // default UI according to platform.
 if (
     browser.browserAction instanceof Object &&
-    browser.browserAction.setPopup instanceof Function
+    browser.browserAction.setPopup instanceof Function &&
+    µb.hiddenSettings.uiFlavor === 'classic'
 ) {
-    const env = vAPI.webextFlavor;
-    if (
-        µb.hiddenSettings.uiFlavor === 'classic' || (
-            µb.hiddenSettings.uiFlavor === 'unset' && (
-                env.soup.has('chromium') && env.major < 66 ||
-                env.soup.has('firefox') && env.major < 68
-            )
-        )
-    ) {
-        browser.browserAction.setPopup({ popup: 'popup.html' });
-    }
+    browser.browserAction.setPopup({ popup: 'popup.html' });
 }
 
 // https://github.com/uBlockOrigin/uBlock-issues/issues/717