diff --git a/webassembly/threads-and-atomics.json b/webassembly/threads-and-atomics.json
index 61bcf34daaca79..23296b6c08ddd1 100644
--- a/webassembly/threads-and-atomics.json
+++ b/webassembly/threads-and-atomics.json
@@ -5,12 +5,12 @@
         "spec_url": "https://github.com/WebAssembly/threads/blob/main/proposals/threads/Overview.md",
         "support": {
           "chrome": {
-            "version_added": "≤80"
+            "version_added": "74"
           },
-          "chrome_android": "mirror",
-          "edge": {
-            "version_added": "≤80"
+          "chrome_android": {
+            "version_added": "88"
           },
+          "edge": "mirror",
           "firefox": {
             "version_added": "79"
           },
@@ -26,7 +26,9 @@
           },
           "safari_ios": "mirror",
           "samsunginternet_android": "mirror",
-          "webview_android": "mirror"
+          "webview_android": {
+            "version_added": false
+          }
         },
         "status": {
           "experimental": false,