diff --git a/packages/react-app/package.json b/packages/react-app/package.json
index a754f9e..7d9b785 100644
--- a/packages/react-app/package.json
+++ b/packages/react-app/package.json
@@ -9,7 +9,12 @@
       "supports cryptography",
       "supports fetch",
       "supports textencoder",
-      "not dead"
+      "not dead",
+      ">0.2%",
+      "not ie <= 99",
+      "not android <= 4.4.4",
+      "not dead",
+      "not op_mini all"
     ],
     "development": [
       "last 1 chrome version",
@@ -84,4 +89,4 @@
     "test": "react-scripts test",
     "ts-prune": "ts-prune"
   }
-}
+}
\ No newline at end of file