diff --git a/.flowconfig b/.flowconfig
index 4d3bd2c9..9714c6b8 100644
--- a/.flowconfig
+++ b/.flowconfig
@@ -19,4 +19,4 @@ suppress_comment=\\(.\\|\n\\)*\\$FlowExpectedError
 munge_underscores=true
 
 [version]
-^0.69.0
+^0.70.0
diff --git a/package.json b/package.json
index 98025fc8..bdb6eb17 100644
--- a/package.json
+++ b/package.json
@@ -27,7 +27,7 @@
     "eslint-plugin-prettier": "2.6.0",
     "eslint-plugin-react": "7.6.1",
     "eslint-plugin-relay": "0.0.21",
-    "flow-bin": "^0.69.0",
+    "flow-bin": "^0.70.0",
     "glob": "^7.1.1",
     "istanbul-api": "^1.1.0",
     "istanbul-lib-coverage": "^1.0.0",
diff --git a/packages/metro/src/DeltaBundler/DeltaCalculator.js b/packages/metro/src/DeltaBundler/DeltaCalculator.js
index 532b9076..6a40ca83 100644
--- a/packages/metro/src/DeltaBundler/DeltaCalculator.js
+++ b/packages/metro/src/DeltaBundler/DeltaCalculator.js
@@ -204,7 +204,6 @@ class DeltaCalculator extends EventEmitter {
     // inlineRequires information, since scripts by definition don't have
     // requires().
     if (this._options.type === 'script') {
-      // $FlowIssue #23854098 - Object.assign() loses the strictness of an object in flow
       return {
         ...transformOptionsForBlacklist,
         inlineRequires: false,
diff --git a/packages/metro/src/ModuleGraph/node-haste/HasteFS.js b/packages/metro/src/ModuleGraph/node-haste/HasteFS.js
index 7d554049..557de553 100644
--- a/packages/metro/src/ModuleGraph/node-haste/HasteFS.js
+++ b/packages/metro/src/ModuleGraph/node-haste/HasteFS.js
@@ -46,6 +46,9 @@ module.exports = class HasteFS {
   }
 
   getAllFiles() {
+    /* $FlowFixMe(>=0.70.0 site=react_native_fb) This comment suppresses an
+     * error found when Flow v0.70 was deployed. To see the error delete this
+     * comment and run Flow. */
     return Array.from(this.files.keys());
   }
 
@@ -55,6 +58,9 @@ module.exports = class HasteFS {
 
   matches(directory: string, pattern: RegExp) {
     const entries = this.directoryEntries.get(directory);
+    /* $FlowFixMe(>=0.70.0 site=react_native_fb) This comment suppresses an
+     * error found when Flow v0.70 was deployed. To see the error delete this
+     * comment and run Flow. */
     return entries ? entries.filter(pattern.test, pattern) : [];
   }
 };
diff --git a/packages/metro/src/Server.js b/packages/metro/src/Server.js
index b0bafe47..c0915f63 100644
--- a/packages/metro/src/Server.js
+++ b/packages/metro/src/Server.js
@@ -481,7 +481,6 @@ class Server {
       module.output.map,
     );
 
-    // $FlowIssue #16581373 spread of an exact object should be exact
     return {
       ...module,
       output: {
diff --git a/packages/metro/src/babel-bridge.js b/packages/metro/src/babel-bridge.js
index cb0f40a7..582aee31 100644
--- a/packages/metro/src/babel-bridge.js
+++ b/packages/metro/src/babel-bridge.js
@@ -58,6 +58,9 @@ function resolvePlugins7(plugins: Array<any>) {
    * installed in the react-native package.
    */
   type ModuleES6 = {__esModule?: boolean, default?: {}};
+  /* $FlowFixMe(>=0.70.0 site=react_native_fb) This comment suppresses an
+   * error found when Flow v0.70 was deployed. To see the error delete this
+   * comment and run Flow. */
   return plugins.map(plugin => {
     // Normalise plugin to an array.
     plugin = Array.isArray(plugin) ? plugin : [plugin];
@@ -379,9 +382,15 @@ function getBabelRegisterConfig7() {
   ];
 
   function config(onlyList: Array<string>) {
+    /* $FlowFixMe(>=0.70.0 site=react_native_fb) This comment suppresses an
+     * error found when Flow v0.70 was deployed. To see the error delete this
+     * comment and run Flow. */
     _only = _only.concat(onlyList);
     return {
       presets: [],
+      /* $FlowFixMe(>=0.70.0 site=react_native_fb) This comment suppresses an
+       * error found when Flow v0.70 was deployed. To see the error delete
+       * this comment and run Flow. */
       plugins: PLUGINS.map(pluginName =>
         // $FlowFixMe TODO t26372934 plugin require
         require(`@babel/plugin-${pluginName}`),
diff --git a/packages/metro/src/index.js b/packages/metro/src/index.js
index 079ad6bf..28c5258f 100644
--- a/packages/metro/src/index.js
+++ b/packages/metro/src/index.js
@@ -164,7 +164,6 @@ exports.createConnectMiddleware = async function({
   config,
   ...rest
 }: CreateConnectMiddlewareOptions) {
-  // $FlowFixMe Flow doesn't support object spread enough for the following line
   const metroServer = await runMetro({
     ...rest,
     config,
@@ -229,7 +228,6 @@ exports.runServer = async ({
     attachHmrServer,
     middleware,
     end,
-    // $FlowFixMe Flow doesn't support object spread enough for the following line
   } = await exports.createConnectMiddleware({
     ...rest,
     port,
@@ -325,7 +323,6 @@ exports.runBuild = async ({
   sourceMapUrl,
   ...rest
 }: RunBuildOptions) => {
-  // $FlowIssue #16581373 spread of an exact object should be exact
   const metroServer = await runMetro({
     ...rest,
     config,
@@ -385,7 +382,6 @@ exports.buildGraph = async function({
   platform = `web`,
   ...rest
 }: BuildGraphOptions): Promise<Graph> {
-  // $FlowIssue #16581373 spread of an exact object should be exact
   const metroServer = await runMetro({
     ...rest,
     config,
diff --git a/packages/metro/src/lib/JsonReporter.js b/packages/metro/src/lib/JsonReporter.js
index 94473177..6a8a11d5 100644
--- a/packages/metro/src/lib/JsonReporter.js
+++ b/packages/metro/src/lib/JsonReporter.js
@@ -27,9 +27,21 @@ class JsonReporter<TEvent: {}> {
     /* $FlowFixMe: fine to call on `undefined`. */
     if (Object.prototype.toString.call(event.error) === '[object Error]') {
       event = {...event};
+      /* $FlowFixMe(>=0.70.0 site=react_native_fb) This comment suppresses an
+       * error found when Flow v0.70 was deployed. To see the error delete
+       * this comment and run Flow. */
       event.error = {
+        /* $FlowFixMe(>=0.70.0 site=react_native_fb) This comment suppresses an
+         * error found when Flow v0.70 was deployed. To see the error delete
+         * this comment and run Flow. */
         ...event.error,
+        /* $FlowFixMe(>=0.70.0 site=react_native_fb) This comment suppresses an
+         * error found when Flow v0.70 was deployed. To see the error delete
+         * this comment and run Flow. */
         message: event.error.message,
+        /* $FlowFixMe(>=0.70.0 site=react_native_fb) This comment suppresses an
+         * error found when Flow v0.70 was deployed. To see the error delete
+         * this comment and run Flow. */
         stack: event.error.stack,
       };
     }
diff --git a/packages/metro/src/lib/removeInlineRequiresBlacklistFromOptions.js b/packages/metro/src/lib/removeInlineRequiresBlacklistFromOptions.js
index 9ee6c147..29fa2225 100644
--- a/packages/metro/src/lib/removeInlineRequiresBlacklistFromOptions.js
+++ b/packages/metro/src/lib/removeInlineRequiresBlacklistFromOptions.js
@@ -17,7 +17,6 @@ function removeInlineRequiresBlacklistFromOptions(
   transformOptions: JSTransformerOptions,
 ): JSTransformerOptions {
   if (typeof transformOptions.inlineRequires === 'object') {
-    // $FlowIssue #23854098 - Object.assign() loses the strictness of an object in flow
     return {
       ...transformOptions,
       inlineRequires: !(path in transformOptions.inlineRequires.blacklist),
diff --git a/packages/metro/src/shared/output/unbundle/as-indexed-file.js b/packages/metro/src/shared/output/unbundle/as-indexed-file.js
index 64c8c200..3c2841ee 100644
--- a/packages/metro/src/shared/output/unbundle/as-indexed-file.js
+++ b/packages/metro/src/shared/output/unbundle/as-indexed-file.js
@@ -198,6 +198,9 @@ function buildTableAndContents(
     moduleGroups,
   );
 
+  /* $FlowFixMe(>=0.70.0 site=react_native_fb) This comment suppresses an
+   * error found when Flow v0.70 was deployed. To see the error delete this
+   * comment and run Flow. */
   return [fileHeader, table, startupCodeBuffer].concat(
     moduleBuffers.map(({buffer}) => buffer),
   );
diff --git a/yarn.lock b/yarn.lock
index cb521072..4236c9ed 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2821,9 +2821,9 @@ flat-cache@^1.2.1:
     graceful-fs "^4.1.2"
     write "^0.2.1"
 
-flow-bin@^0.69.0:
-  version "0.69.0"
-  resolved "https://registry.yarnpkg.com/flow-bin/-/flow-bin-0.69.0.tgz#053159a684a6051fcbf0b71a2eb19a9679082da6"
+flow-bin@^0.70.0:
+  version "0.70.0"
+  resolved "https://registry.yarnpkg.com/flow-bin/-/flow-bin-0.70.0.tgz#080ae83a997f2b4ddb3dc2649bf13336825292b5"
 
 for-in@^1.0.1, for-in@^1.0.2:
   version "1.0.2"