diff --git a/declarations/comment.js b/declarations/comment.js
index c901cb3dd..cab5a453f 100644
--- a/declarations/comment.js
+++ b/declarations/comment.js
@@ -12,7 +12,10 @@ type DocumentationConfig = {
   theme: string,
   requireExtension?: Array<string>,
   parseExtension: Array<string>,
-  noReferenceLinks?: boolean
+  noReferenceLinks?: boolean,
+  markdownToc?: boolean,
+  documentExported?: boolean,
+  hljs?: Object
 };
 
 type CommentError = {
@@ -112,7 +115,9 @@ type Comment = {
   path?: Array<{
     name: string,
     scope: Scope
-  }>
+  }>,
+
+  ignore?: boolean
 };
 
 type CommentMembers = {
diff --git a/package.json b/package.json
index 34ff03719..313944e85 100644
--- a/package.json
+++ b/package.json
@@ -72,7 +72,7 @@
     "eslint": "^4.16.0",
     "eslint-config-prettier": "^2.9.0",
     "eslint-plugin-flowtype": "^2.41.0",
-    "flow-bin": "^0.66.0",
+    "flow-bin": "^0.69.0",
     "fs-extra": "^5.0.0",
     "husky": "^0.14.3",
     "jest": "^22.1.4",
diff --git a/src/serve/error_page.js b/src/serve/error_page.js
index b35b07cab..8dc9e046e 100644
--- a/src/serve/error_page.js
+++ b/src/serve/error_page.js
@@ -26,7 +26,7 @@ ansiHTML.setColors({
  * @param error parse or generation error
  * @returns {Object} vinyl file object
  */
-function errorPage(error: Error) {
+function errorPage(error: Error | { codeFrame: string }) {
   let errorText = error.toString();
   console.error(error);
   if (error.codeFrame) {
diff --git a/yarn.lock b/yarn.lock
index a1873dbac..33f18ea23 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2421,9 +2421,9 @@ flat-cache@^1.2.1:
     graceful-fs "^4.1.2"
     write "^0.2.1"
 
-flow-bin@^0.66.0:
-  version "0.66.0"
-  resolved "https://registry.yarnpkg.com/flow-bin/-/flow-bin-0.66.0.tgz#a96dde7015dc3343fd552a7b4963c02be705ca26"
+flow-bin@^0.69.0:
+  version "0.69.0"
+  resolved "https://registry.yarnpkg.com/flow-bin/-/flow-bin-0.69.0.tgz#053159a684a6051fcbf0b71a2eb19a9679082da6"
 
 flush-write-stream@^1.0.2:
   version "1.0.2"