diff --git a/.flowconfig b/.flowconfig
index 2edf60073..16c68958e 100644
--- a/.flowconfig
+++ b/.flowconfig
@@ -52,4 +52,4 @@ suppress_comment=\\(.\\|\n\\)*\\$FlowExpectedError
 unsafe.enable_getters_and_setters=true
 
 [version]
-^0.49.1
+^0.50.0
diff --git a/RNTester/js/XHRExampleDownload.js b/RNTester/js/XHRExampleDownload.js
index 595e9a215..1b6e172af 100644
--- a/RNTester/js/XHRExampleDownload.js
+++ b/RNTester/js/XHRExampleDownload.js
@@ -79,9 +79,6 @@ class XHRExampleDownload extends React.Component {
     }
 
     const onreadystatechange = () => {
-      /* $FlowFixMe(>=0.48.0 site=react_native_fb,react_native_oss) This comment
-       * suppresses an error found when Flow v0.48 was deployed. To see the
-       * error delete this comment and run Flow. */
       if (xhr.readyState === xhr.HEADERS_RECEIVED) {
         const contentLength =
           parseInt(xhr.getResponseHeader('Content-Length'), 10);
@@ -89,9 +86,6 @@ class XHRExampleDownload extends React.Component {
           contentLength,
           responseLength: 0,
         });
-      /* $FlowFixMe(>=0.48.0 site=react_native_fb,react_native_oss) This comment
-       * suppresses an error found when Flow v0.48 was deployed. To see the
-       * error delete this comment and run Flow. */
       } else if (xhr.readyState === xhr.LOADING && xhr.response) {
         this.setState({
           responseLength: xhr.response.length,
diff --git a/package.json b/package.json
index f661d710d..58635cb7b 100644
--- a/package.json
+++ b/package.json
@@ -229,7 +229,7 @@
     "eslint-plugin-flowtype": "^2.33.0",
     "eslint-plugin-prettier": "2.1.1",
     "eslint-plugin-react": "^7.0.1",
-    "flow-bin": "^0.49.1",
+    "flow-bin": "^0.50.0",
     "jest": "20.1.0-chi.1",
     "jest-phabricator": "20.1.0-chi.1",
     "jest-repl": "20.1.0-chi.1",