diff --git a/packages/metro-bundler/src/Config.js b/packages/metro-bundler/src/Config.js
index 8fca6782cf..fb4e4c9f13 100644
--- a/packages/metro-bundler/src/Config.js
+++ b/packages/metro-bundler/src/Config.js
@@ -136,6 +136,9 @@ export type ConfigT = {
   runBeforeMainModule: Array<string>,
 };
 
+/* $FlowFixMe(>=0.56.0 site=react_native_fb) This comment suppresses an error
+ * found when Flow v0.56 was deployed. To see the error delete this comment and
+ * run Flow. */
 const DEFAULT = ({
   extraNodeModules: Object.create(null),
   getAssetExts: () => [],
diff --git a/packages/metro-bundler/src/DeltaBundler/DeltaTransformer.js b/packages/metro-bundler/src/DeltaBundler/DeltaTransformer.js
index 49017c2900..784dfa581b 100644
--- a/packages/metro-bundler/src/DeltaBundler/DeltaTransformer.js
+++ b/packages/metro-bundler/src/DeltaBundler/DeltaTransformer.js
@@ -316,6 +316,9 @@ class DeltaTransformer extends EventEmitter {
       ).map(dep => this._getModuleId({path: dep}));
     }
 
+    /* $FlowFixMe(>=0.56.0 site=react_native_fb) This comment suppresses an
+     * error found when Flow v0.56 was deployed. To see the error delete this
+     * comment and run Flow. */
     return output;
   }
 
diff --git a/packages/metro-bundler/src/JSTransformer/index.js b/packages/metro-bundler/src/JSTransformer/index.js
index c4da1a89e7..83dbbda913 100644
--- a/packages/metro-bundler/src/JSTransformer/index.js
+++ b/packages/metro-bundler/src/JSTransformer/index.js
@@ -141,6 +141,9 @@ class Transformer {
 
   kill() {
     if (this._usesFarm && this._workers) {
+      /* $FlowFixMe(>=0.56.0 site=react_native_fb) This comment suppresses an
+       * error found when Flow v0.56 was deployed. To see the error delete this
+       * comment and run Flow. */
       workerFarm.end(this._workers);
     }
   }
diff --git a/packages/metro-bundler/src/Resolver/polyfills/require.js b/packages/metro-bundler/src/Resolver/polyfills/require.js
index 25a3a9bf82..f602596f67 100644
--- a/packages/metro-bundler/src/Resolver/polyfills/require.js
+++ b/packages/metro-bundler/src/Resolver/polyfills/require.js
@@ -53,8 +53,14 @@ type VerboseModuleNameForDev = string;
 global.require = require;
 global.__d = define;
 
+/* $FlowFixMe(>=0.56.0 site=react_native_fb) This comment suppresses an error
+ * found when Flow v0.56 was deployed. To see the error delete this comment and
+ * run Flow. */
 const modules: ModuleMap = Object.create(null);
 if (__DEV__) {
+  /* $FlowFixMe(>=0.56.0 site=react_native_fb) This comment suppresses an error
+   * found when Flow v0.56 was deployed. To see the error delete this comment
+   * and run Flow. */
   var verboseNamesToModuleIds: {[key: string]: number} = Object.create(null);
 }
 
diff --git a/packages/metro-bundler/src/Server/index.js b/packages/metro-bundler/src/Server/index.js
index 2d756ec999..8a2807935c 100644
--- a/packages/metro-bundler/src/Server/index.js
+++ b/packages/metro-bundler/src/Server/index.js
@@ -234,6 +234,9 @@ class Server {
 
     this._reporter = reporter;
     this._projectRoots = this._opts.projectRoots;
+    /* $FlowFixMe(>=0.56.0 site=react_native_fb) This comment suppresses an
+     * error found when Flow v0.56 was deployed. To see the error delete this
+     * comment and run Flow. */
     this._bundles = Object.create(null);
     this._bundleBuildInfos = new WeakMap();
     this._changeWatchers = [];
@@ -473,6 +476,9 @@ class Server {
   }
 
   _clearBundles() {
+    /* $FlowFixMe(>=0.56.0 site=react_native_fb) This comment suppresses an
+     * error found when Flow v0.56 was deployed. To see the error delete this
+     * comment and run Flow. */
     this._bundles = Object.create(null);
   }
 
diff --git a/packages/metro-bundler/src/node-haste/DependencyGraph.js b/packages/metro-bundler/src/node-haste/DependencyGraph.js
index c3aefd9f57..2d8be3cd8a 100644
--- a/packages/metro-bundler/src/node-haste/DependencyGraph.js
+++ b/packages/metro-bundler/src/node-haste/DependencyGraph.js
@@ -332,7 +332,6 @@ class DependencyGraph extends EventEmitter {
 }
 
 function NotFoundError(...args) {
-  /* $FlowFixMe: monkey-patching */
   Error.call(this);
   Error.captureStackTrace(this, this.constructor);
   var msg = util.format.apply(util, args);
diff --git a/packages/metro-bundler/src/node-haste/DependencyGraph/ResolutionRequest.js b/packages/metro-bundler/src/node-haste/DependencyGraph/ResolutionRequest.js
index 7d025568ea..1cb81a5aba 100644
--- a/packages/metro-bundler/src/node-haste/DependencyGraph/ResolutionRequest.js
+++ b/packages/metro-bundler/src/node-haste/DependencyGraph/ResolutionRequest.js
@@ -363,6 +363,9 @@ class ResolutionRequest<TModule: Moduleish, TPackage: Packageish> {
   }
 
   _resetResolutionCache() {
+    /* $FlowFixMe(>=0.56.0 site=react_native_fb) This comment suppresses an
+     * error found when Flow v0.56 was deployed. To see the error delete this
+     * comment and run Flow. */
     this._immediateResolutionCache = Object.create(null);
   }
 
diff --git a/packages/metro-bundler/src/node-haste/DependencyGraph/ResolutionResponse.js b/packages/metro-bundler/src/node-haste/DependencyGraph/ResolutionResponse.js
index 9115dcccb1..590e77373d 100644
--- a/packages/metro-bundler/src/node-haste/DependencyGraph/ResolutionResponse.js
+++ b/packages/metro-bundler/src/node-haste/DependencyGraph/ResolutionResponse.js
@@ -34,6 +34,9 @@ class ResolutionResponse<TModule: {hash(): string}, TOptions> {
     this.mocks = null;
     this.numPrependedDependencies = 0;
     this.options = options;
+    /* $FlowFixMe(>=0.56.0 site=react_native_fb) This comment suppresses an
+     * error found when Flow v0.56 was deployed. To see the error delete this
+     * comment and run Flow. */
     this._mappings = Object.create(null);
     this._finalized = false;
   }
diff --git a/packages/metro-bundler/src/node-haste/ModuleCache.js b/packages/metro-bundler/src/node-haste/ModuleCache.js
index cc99b13b50..b8bd500235 100644
--- a/packages/metro-bundler/src/node-haste/ModuleCache.js
+++ b/packages/metro-bundler/src/node-haste/ModuleCache.js
@@ -72,8 +72,14 @@ class ModuleCache {
     this._getTransformCacheKey = getTransformCacheKey;
     this._globalTransformCache = globalTransformCache;
     this._depGraphHelpers = depGraphHelpers;
+    /* $FlowFixMe(>=0.56.0 site=react_native_fb) This comment suppresses an
+     * error found when Flow v0.56 was deployed. To see the error delete this
+     * comment and run Flow. */
     this._moduleCache = Object.create(null);
     this._moduleOptions = moduleOptions;
+    /* $FlowFixMe(>=0.56.0 site=react_native_fb) This comment suppresses an
+     * error found when Flow v0.56 was deployed. To see the error delete this
+     * comment and run Flow. */
     this._packageCache = Object.create(null);
     this._packageModuleMap = new WeakMap();
     this._platforms = platforms;
diff --git a/packages/metro-bundler/src/node-haste/Package.js b/packages/metro-bundler/src/node-haste/Package.js
index c9b1501043..ab99764ac4 100644
--- a/packages/metro-bundler/src/node-haste/Package.js
+++ b/packages/metro-bundler/src/node-haste/Package.js
@@ -169,7 +169,6 @@ function getReplacements(pkg: PackageContent): mixed {
 
   // merge with "browser" as default,
   // "react-native" as override
-  // $FlowFixMe(>=0.35.0) browser and rn should be objects
   return {...browser, ...rn};
 }