diff --git a/addon/manifest.json b/addon/manifest.json
index c73ccbd..3b6055a 100644
--- a/addon/manifest.json
+++ b/addon/manifest.json
@@ -5,7 +5,7 @@
       "id": "tbkeys@addons.thunderbird.net",
       "strict_min_version": "68.0",
       "strict_max_version": "*",
-      "update_url": "https://raw.githubusercontent.com/wshanks/tbkeys/main/updates.json"
+      "update_url": "https://raw.githubusercontent.com/wshanks/tbkeys/testing/updates.json"
     }
   },
   "name": "tbkeys",
diff --git a/updates.json b/updates.json
index c02368f..d3216c2 100644
--- a/updates.json
+++ b/updates.json
@@ -11,59 +11,108 @@
         },
         {
           "version": "2.0.0",
-          "update_link": "https://github.com/wshanks/tbkeys/releases/download/v2.0.0/tbkeys.xpi"
+          "update_link": "https://github.com/wshanks/tbkeys/releases/download/v2.0.0/tbkeys.xpi",
+          "browser_specific_settings": {
+            "gecko": { "strict_max_version": "68" }
+          }
         },
         {
           "version": "2.0.1",
-          "update_link": "https://github.com/wshanks/tbkeys/releases/download/v2.0.1/tbkeys.xpi"
+          "update_link": "https://github.com/wshanks/tbkeys/releases/download/v2.0.1/tbkeys.xpi",
+          "browser_specific_settings": {
+            "gecko": { "strict_max_version": "68" }
+          }
         },
         {
           "version": "2.0.2",
-          "update_link": "https://github.com/wshanks/tbkeys/releases/download/v2.0.2/tbkeys.xpi"
+          "update_link": "https://github.com/wshanks/tbkeys/releases/download/v2.0.2/tbkeys.xpi",
+          "browser_specific_settings": {
+            "gecko": { "strict_max_version": "68" }
+          }
         },
         {
           "version": "2.1.0",
-          "update_link": "https://github.com/wshanks/tbkeys/releases/download/v2.1.0/tbkeys.xpi"
+          "update_link": "https://github.com/wshanks/tbkeys/releases/download/v2.1.0/tbkeys.xpi",
+          "browser_specific_settings": {
+            "gecko": { "strict_max_version": "68" }
+          }
         },
         {
           "version": "2.1.1",
-          "update_link": "https://github.com/wshanks/tbkeys/releases/download/v2.1.1/tbkeys.xpi"
+          "update_link": "https://github.com/wshanks/tbkeys/releases/download/v2.1.1/tbkeys.xpi",
+          "browser_specific_settings": {
+            "gecko": { "strict_max_version": "68" }
+          }
         },
         {
           "version": "2.1.2",
-          "update_link": "https://github.com/wshanks/tbkeys/releases/download/v2.1.2/tbkeys.xpi"
+          "update_link": "https://github.com/wshanks/tbkeys/releases/download/v2.1.2/tbkeys.xpi",
+          "browser_specific_settings": {
+            "gecko": { "strict_max_version": "68" }
+          }
         },
         {
           "version": "2.1.3",
-          "update_link": "https://github.com/wshanks/tbkeys/releases/download/v2.1.3/tbkeys.xpi"
+          "update_link": "https://github.com/wshanks/tbkeys/releases/download/v2.1.3/tbkeys.xpi",
+          "browser_specific_settings": {
+            "gecko": { "strict_max_version": "68" }
+          }
         },
         {
           "version": "2.1.4",
-          "update_link": "https://github.com/wshanks/tbkeys/releases/download/v2.1.4/tbkeys.xpi"
+          "update_link": "https://github.com/wshanks/tbkeys/releases/download/v2.1.4/tbkeys.xpi",
+          "browser_specific_settings": {
+            "gecko": { "strict_max_version": "68" }
+          }
         },
         {
           "version": "2.2.0",
-          "update_link": "https://github.com/wshanks/tbkeys/releases/download/v2.2.0/tbkeys.xpi"
+          "update_link": "https://github.com/wshanks/tbkeys/releases/download/v2.2.0/tbkeys.xpi",
+          "browser_specific_settings": {
+            "gecko": { "strict_max_version": "68" }
+          }
         },
         {
           "version": "2.2.1",
-          "update_link": "https://github.com/wshanks/tbkeys/releases/download/v2.2.1/tbkeys.xpi"
+          "update_link": "https://github.com/wshanks/tbkeys/releases/download/v2.2.1/tbkeys.xpi",
+          "browser_specific_settings": {
+            "gecko": { "strict_max_version": "68" }
+          }
         },
         {
           "version": "2.2.2",
-          "update_link": "https://github.com/wshanks/tbkeys/releases/download/v2.2.2/tbkeys.xpi"
+          "update_link": "https://github.com/wshanks/tbkeys/releases/download/v2.2.2/tbkeys.xpi",
+          "browser_specific_settings": {
+            "gecko": { "strict_max_version": "68" }
+          }
         },
         {
           "version": "2.2.3",
-          "update_link": "https://github.com/wshanks/tbkeys/releases/download/v2.2.3/tbkeys.xpi"
+          "update_link": "https://github.com/wshanks/tbkeys/releases/download/v2.2.3/tbkeys.xpi",
+          "browser_specific_settings": {
+            "gecko": { "strict_max_version": "68" }
+          }
         },
         {
           "version": "2.2.4",
-          "update_link": "https://github.com/wshanks/tbkeys/releases/download/v2.2.4/tbkeys.xpi"
+          "update_link": "https://github.com/wshanks/tbkeys/releases/download/v2.2.4/tbkeys.xpi",
+          "browser_specific_settings": {
+            "gecko": { "strict_max_version": "68" }
+          }
         },
         {
           "version": "2.2.5",
-          "update_link": "https://github.com/wshanks/tbkeys/releases/download/v2.2.5/tbkeys.xpi"
+          "update_link": "https://github.com/wshanks/tbkeys/releases/download/v2.2.5/tbkeys.xpi",
+          "browser_specific_settings": {
+            "gecko": { "strict_max_version": "68" }
+          }
+        },
+        {
+          "version": "2.3.0",
+          "update_link": "https://github.com/wshanks/tbkeys/releases/download/v2.3.0/tbkeys.xpi",
+          "browser_specific_settings": {
+            "gecko": { "strict_max_version": "115" }
+          }
         }
       ]
     }