diff --git a/manifest.firefox.json b/manifest.firefox.json
index 7f4d176..b1397cc 100644
--- a/manifest.firefox.json
+++ b/manifest.firefox.json
@@ -2,7 +2,7 @@
     "browser_specific_settings": {
         "gecko": {
             "id": "betterstudres@dev.build",
-            "strict_min_version": "42.0"
+            "strict_min_version": "58.0"
         }
     }
 }