diff --git a/api/WritableStream.json b/api/WritableStream.json
index 58164a973c7c26..e25c9292e62e85 100644
--- a/api/WritableStream.json
+++ b/api/WritableStream.json
@@ -42,7 +42,7 @@
           }
         },
         "status": {
-          "experimental": true,
+          "experimental": false,
           "standard_track": true,
           "deprecated": false
         }
@@ -90,7 +90,7 @@
             }
           },
           "status": {
-            "experimental": true,
+            "experimental": false,
             "standard_track": true,
             "deprecated": false
           }
@@ -138,7 +138,7 @@
             }
           },
           "status": {
-            "experimental": true,
+            "experimental": false,
             "standard_track": true,
             "deprecated": false
           }
@@ -186,7 +186,7 @@
             }
           },
           "status": {
-            "experimental": true,
+            "experimental": false,
             "standard_track": true,
             "deprecated": false
           }
@@ -234,7 +234,7 @@
             }
           },
           "status": {
-            "experimental": true,
+            "experimental": false,
             "standard_track": true,
             "deprecated": false
           }