diff --git a/annotate-page/manifest.json b/annotate-page/manifest.json
index 6edf05c..9a80576 100644
--- a/annotate-page/manifest.json
+++ b/annotate-page/manifest.json
@@ -4,7 +4,7 @@
   "name": "Web page annotator",
   "description": "Displays a sidebar that lets you take notes on web pages.",
   "version": "1.0",
-  "applications": {
+  "browser_specific_settings": {
     "gecko": {
       "strict_min_version": "54.0a1"
     }
diff --git a/commands/manifest.json b/commands/manifest.json
index df959c1..ca1bcea 100644
--- a/commands/manifest.json
+++ b/commands/manifest.json
@@ -5,7 +5,7 @@
   "manifest_version": 2,
   "version": "1.0",
 
-  "applications": {
+  "browser_specific_settings": {
     "gecko": {
       "id": "commands-demo@mozilla.org",
       "strict_min_version": "60.0b5"
diff --git a/discogs-search/manifest.json b/discogs-search/manifest.json
index ecaf34d..b7491d1 100644
--- a/discogs-search/manifest.json
+++ b/discogs-search/manifest.json
@@ -4,7 +4,7 @@
   "name": "Discogs search engine",
   "description": "Adds a search engine that searches discogs.com",
   "version": "1.0",
-  "applications": {
+  "browser_specific_settings": {
     "gecko": {
       "strict_min_version": "55"
     }
diff --git a/dynamic-theme/manifest.json b/dynamic-theme/manifest.json
index a5ae5b4..360723e 100644
--- a/dynamic-theme/manifest.json
+++ b/dynamic-theme/manifest.json
@@ -11,7 +11,7 @@
     "scripts": ["background.js"]
   },
   "version": "1.0",
-  "applications": {
+  "browser_specific_settings": {
     "gecko": {
       "strict_min_version": "55.0a2"
     }
diff --git a/export-helpers/manifest.json b/export-helpers/manifest.json
index 806ff84..a034157 100644
--- a/export-helpers/manifest.json
+++ b/export-helpers/manifest.json
@@ -9,7 +9,7 @@
     "48": "icons/arrow.svg"
   },
 
-  "applications": {
+  "browser_specific_settings": {
     "gecko": {
       "id": "export-helpers@mozilla.org",
       "strict_min_version": "49.0"
diff --git a/favourite-colour/manifest.json b/favourite-colour/manifest.json
index 8fe422e..ecbc9df 100644
--- a/favourite-colour/manifest.json
+++ b/favourite-colour/manifest.json
@@ -15,7 +15,7 @@
   },
   "permissions": ["storage"],
   "version": "1.1",
-  "applications": {
+  "browser_specific_settings": {
       "gecko": {
           "id": "favourite-colour-examples@mozilla.org",
           "strict_min_version": "57.0a1"
diff --git a/find-across-tabs/manifest.json b/find-across-tabs/manifest.json
index 8e33b8c..9588de4 100644
--- a/find-across-tabs/manifest.json
+++ b/find-across-tabs/manifest.json
@@ -21,7 +21,7 @@
     }
   },
   "version": "1.0",
-  "applications": {
+  "browser_specific_settings": {
     "gecko": {
       "strict_min_version": "57.0a1"
     }
diff --git a/firefox-code-search/manifest.json b/firefox-code-search/manifest.json
index 38c6bad..28bc524 100644
--- a/firefox-code-search/manifest.json
+++ b/firefox-code-search/manifest.json
@@ -2,7 +2,7 @@
   "name": "Firefox Code Search",
   "description" : "To use, type 'cs' plus a search term into the url bar.",
   "version": "1.0",
-  "applications": {
+  "browser_specific_settings": {
     "gecko": {
       "strict_min_version": "52.0a1"
     }
diff --git a/google-userinfo/manifest.json b/google-userinfo/manifest.json
index e582748..bf01490 100644
--- a/google-userinfo/manifest.json
+++ b/google-userinfo/manifest.json
@@ -3,7 +3,7 @@
   "name": "Google User Info",
   "version": "1",
   "manifest_version": 2,
-  "applications": {
+  "browser_specific_settings": {
     "gecko": {
       "id": "google-user-info@mozilla.org",
       "strict_min_version": "53a1"
diff --git a/http-response/manifest.json b/http-response/manifest.json
index e2a13f4..3e3d75c 100755
--- a/http-response/manifest.json
+++ b/http-response/manifest.json
@@ -17,7 +17,7 @@
     "scripts": ["background.js"]
   },
 
-  "applications": {
+  "browser_specific_settings": {
     "gecko": {
       "strict_min_version": "57.0a1"
     }
diff --git a/menu-accesskey-visible/manifest.json b/menu-accesskey-visible/manifest.json
index c6b62d6..1a506a5 100644
--- a/menu-accesskey-visible/manifest.json
+++ b/menu-accesskey-visible/manifest.json
@@ -5,7 +5,7 @@
   "description": "__MSG_extensionDescription__",
   "version": "1.0",
   "default_locale": "en",
-  "applications": {
+  "browser_specific_settings": {
     "gecko": {
       "strict_min_version": "56.0a1"
     }
diff --git a/menu-demo/manifest.json b/menu-demo/manifest.json
index f984c05..59c12ea 100644
--- a/menu-demo/manifest.json
+++ b/menu-demo/manifest.json
@@ -5,7 +5,7 @@
   "description": "__MSG_extensionDescription__",
   "version": "1.0",
   "default_locale": "en",
-  "applications": {
+  "browser_specific_settings": {
     "gecko": {
       "strict_min_version": "56.0a1"
     }
diff --git a/menu-labelled-open/manifest.json b/menu-labelled-open/manifest.json
index d5b3b2d..b56819b 100644
--- a/menu-labelled-open/manifest.json
+++ b/menu-labelled-open/manifest.json
@@ -4,7 +4,7 @@
   "name": "Labelled open",
   "description": "Adds a context menu item that labels links with the hostname. Demo of onShown and refresh().",
   "version": "1.0",
-  "applications": {
+  "browser_specific_settings": {
     "gecko": {
       "strict_min_version": "60.0a1"
     }
diff --git a/menu-search/manifest.json b/menu-search/manifest.json
index 639373f..394e30d 100644
--- a/menu-search/manifest.json
+++ b/menu-search/manifest.json
@@ -4,7 +4,7 @@
   "name": "Search using...",
   "description": "Search ",
   "version": "1.0",
-  "applications": {
+  "browser_specific_settings": {
     "gecko": {
       "strict_min_version": "63.0b14"
     }
diff --git a/mocha-client-tests/addon/manifest.json b/mocha-client-tests/addon/manifest.json
index 26b0f43..89e67d9 100644
--- a/mocha-client-tests/addon/manifest.json
+++ b/mocha-client-tests/addon/manifest.json
@@ -19,7 +19,7 @@
     "default_title": "Mocha Test",
     "default_popup": "popup.html"
   },
-  "applications": {
+  "browser_specific_settings": {
     "gecko": {
       "strict_min_version": "45.0"
     }
diff --git a/native-messaging/add-on/manifest.json b/native-messaging/add-on/manifest.json
index bd3ba1f..0a7800c 100644
--- a/native-messaging/add-on/manifest.json
+++ b/native-messaging/add-on/manifest.json
@@ -8,7 +8,7 @@
     "48": "icons/message.svg"
   },
 
-  "applications": {
+  "browser_specific_settings": {
     "gecko": {
       "id": "ping_pong@example.org",
       "strict_min_version": "50.0"
diff --git a/navigation-stats/manifest.json b/navigation-stats/manifest.json
index fac27f5..c9ca9f2 100644
--- a/navigation-stats/manifest.json
+++ b/navigation-stats/manifest.json
@@ -16,7 +16,7 @@
   "icons": {
     "32": "icons/icon-32.png"
   },
-  "applications": {
+  "browser_specific_settings": {
     "gecko": {
       "strict_min_version": "50.0"
     }
diff --git a/permissions/manifest.json b/permissions/manifest.json
index 0ff4162..1c6c941 100644
--- a/permissions/manifest.json
+++ b/permissions/manifest.json
@@ -21,7 +21,7 @@
   "optional_permissions": [
     "history"
   ],
-  "applications": {
+  "browser_specific_settings": {
     "gecko": {
       "strict_min_version": "55.0a2"
     }
diff --git a/private-browsing-theme/manifest.json b/private-browsing-theme/manifest.json
index b718584..403255c 100644
--- a/private-browsing-theme/manifest.json
+++ b/private-browsing-theme/manifest.json
@@ -7,7 +7,7 @@
     "scripts": ["background.js"]
   },
   "permissions": ["theme"],
-  "applications": {
+  "browser_specific_settings": {
     "gecko": {
       "id": "private-window-theme@mozilla.org",
       "strict_min_version": "58.0"
diff --git a/proxy-blocker/manifest.json b/proxy-blocker/manifest.json
index 6e7263f..9d1082c 100644
--- a/proxy-blocker/manifest.json
+++ b/proxy-blocker/manifest.json
@@ -10,7 +10,7 @@
     "96": "icons/block.svg"
   },
 
-  "applications": {
+  "browser_specific_settings": {
     "gecko": {
       "strict_min_version": "56.0a1"
     }
diff --git a/quicknote/manifest.json b/quicknote/manifest.json
index ba5f2e5..0b10eb7 100644
--- a/quicknote/manifest.json
+++ b/quicknote/manifest.json
@@ -21,7 +21,7 @@
     "default_popup": "popup/quicknote.html"
   },
 
-  "applications": {
+  "browser_specific_settings": {
     "gecko": {
       "id": "quicknote-example@mozilla.org"
     }
diff --git a/root-cert-stats/manifest.json b/root-cert-stats/manifest.json
index c82da2f..9fee1aa 100644
--- a/root-cert-stats/manifest.json
+++ b/root-cert-stats/manifest.json
@@ -17,7 +17,7 @@
   "icons": {
     "32": "icons/icon-32.png"
   },
-  "applications": {
+  "browser_specific_settings": {
     "gecko": {
       "strict_min_version": "62.0b5"
     }
diff --git a/session-state/manifest.json b/session-state/manifest.json
index 9f25195..f09b18d 100644
--- a/session-state/manifest.json
+++ b/session-state/manifest.json
@@ -1,5 +1,5 @@
 {
-  "applications": {
+  "browser_specific_settings": {
     "gecko": {
       "id": "session-state@example.com",
       "strict_min_version": "57.0a1"
diff --git a/stored-credentials/manifest.json b/stored-credentials/manifest.json
index 3e19a85..65a15c8 100644
--- a/stored-credentials/manifest.json
+++ b/stored-credentials/manifest.json
@@ -8,7 +8,7 @@
     "48": "icons/lock.svg"
   },
 
-  "applications": {
+  "browser_specific_settings": {
     "gecko": {
       "strict_min_version": "54.0a1"
     }
diff --git a/tabs-tabs-tabs/manifest.json b/tabs-tabs-tabs/manifest.json
index 0e455a5..6f470b7 100644
--- a/tabs-tabs-tabs/manifest.json
+++ b/tabs-tabs-tabs/manifest.json
@@ -1,5 +1,5 @@
 {
-  "applications": {
+  "browser_specific_settings": {
     "gecko": {
       "strict_min_version": "58.0a1"
     }
diff --git a/theme-integrated-sidebar/manifest.json b/theme-integrated-sidebar/manifest.json
index d3c10d6..295ec56 100644
--- a/theme-integrated-sidebar/manifest.json
+++ b/theme-integrated-sidebar/manifest.json
@@ -11,7 +11,7 @@
     "default_panel": "sidebar.html"
   },
   "version": "1.0",
-  "applications": {
+  "browser_specific_settings": {
     "gecko": {
       "id": "theme-integrated-sidebar@mozilla.org",
       "strict_min_version": "58.0a1"
diff --git a/theme-switcher/manifest.json b/theme-switcher/manifest.json
index f873ee7..fbece4b 100644
--- a/theme-switcher/manifest.json
+++ b/theme-switcher/manifest.json
@@ -18,7 +18,7 @@
       "128": "star-half.svg"
   },
   "version": "1.0",
-  "applications": {
+  "browser_specific_settings": {
     "gecko": {
         "strict_min_version": "55.0a1"
     }
diff --git a/top-sites/manifest.json b/top-sites/manifest.json
index ae6f273..2eb5a58 100644
--- a/top-sites/manifest.json
+++ b/top-sites/manifest.json
@@ -8,7 +8,7 @@
   "permissions": [
       "topSites"
   ],
-  "applications": {
+  "browser_specific_settings": {
       "gecko": {
           "strict_min_version": "54.0a1"
       }
diff --git a/user-script/manifest.json b/user-script/manifest.json
index 0612f45..b233b83 100644
--- a/user-script/manifest.json
+++ b/user-script/manifest.json
@@ -4,7 +4,7 @@
   "name": "User script",
   "version": "1.1",
 
-  "applications": {
+  "browser_specific_settings": {
     "gecko": {
       "id": "user-script-example@mozilla.org",
       "strict_min_version": "59.0a1"