diff --git a/package.json b/package.json
index 14432b729..f80bdcc7e 100644
--- a/package.json
+++ b/package.json
@@ -46,7 +46,7 @@
     "babel-preset-stage-2": "6.24.1",
     "babel-register": "6.26.0",
     "conventional-changelog-cli": "2.0.11",
-    "doctoc": "1.3.1",
+    "doctoc": "1.4.0",
     "enzyme": "3.7.0",
     "enzyme-adapter-react-16": "1.6.0",
     "eslint": "5.7.0",
diff --git a/yarn.lock b/yarn.lock
index 981ef83ff..a4da17ebc 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -232,6 +232,22 @@
   dependencies:
     any-observable "^0.3.0"
 
+"@textlint/ast-node-types@^4.0.3":
+  version "4.2.1"
+  resolved "https://registry.yarnpkg.com/@textlint/ast-node-types/-/ast-node-types-4.2.1.tgz#978fa10e23468114462fc08ef29f96980c12a8ef"
+
+"@textlint/markdown-to-ast@~6.0.9":
+  version "6.0.9"
+  resolved "https://registry.yarnpkg.com/@textlint/markdown-to-ast/-/markdown-to-ast-6.0.9.tgz#e7c89e5ad15d17dcd8e5a62758358936827658fa"
+  dependencies:
+    "@textlint/ast-node-types" "^4.0.3"
+    debug "^2.1.3"
+    remark-frontmatter "^1.2.0"
+    remark-parse "^5.0.0"
+    structured-source "^3.0.2"
+    traverse "^0.6.6"
+    unified "^6.1.6"
+
 "@types/estree@0.0.39":
   version "0.0.39"
   resolved "https://registry.yarnpkg.com/@types/estree/-/estree-0.0.39.tgz#e177e699ee1b8c22d23174caaa7422644389509f"
@@ -1522,10 +1538,6 @@ caseless@~0.12.0:
   version "0.12.0"
   resolved "https://registry.yarnpkg.com/caseless/-/caseless-0.12.0.tgz#1b681c21ff84033c826543090689420d187151dc"
 
-ccount@^1.0.0:
-  version "1.0.2"
-  resolved "https://registry.yarnpkg.com/ccount/-/ccount-1.0.2.tgz#53b6a2f815bb77b9c2871f7b9a72c3a25f1d8e89"
-
 center-align@^0.1.1:
   version "0.1.3"
   resolved "https://registry.yarnpkg.com/center-align/-/center-align-0.1.3.tgz#aa0d32629b6ee972200411cbd4461c907bc2b7ad"
@@ -1567,10 +1579,6 @@ chalk@^2.4.1:
     escape-string-regexp "^1.0.5"
     supports-color "^5.3.0"
 
-character-entities-html4@^1.0.0:
-  version "1.1.1"
-  resolved "https://registry.yarnpkg.com/character-entities-html4/-/character-entities-html4-1.1.1.tgz#359a2a4a0f7e29d3dc2ac99bdbe21ee39438ea50"
-
 character-entities-legacy@^1.0.0:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/character-entities-legacy/-/character-entities-legacy-1.1.1.tgz#f40779df1a101872bb510a3d295e1fccf147202f"
@@ -1758,9 +1766,9 @@ code-point-at@^1.0.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/code-point-at/-/code-point-at-1.1.0.tgz#0d070b4d043a5bea33a2f1a40e2edb3d9a4ccf77"
 
-collapse-white-space@^1.0.0:
-  version "1.0.3"
-  resolved "https://registry.yarnpkg.com/collapse-white-space/-/collapse-white-space-1.0.3.tgz#4b906f670e5a963a87b76b0e1689643341b6023c"
+collapse-white-space@^1.0.2:
+  version "1.0.4"
+  resolved "https://registry.yarnpkg.com/collapse-white-space/-/collapse-white-space-1.0.4.tgz#ce05cf49e54c3277ae573036a26851ba430a0091"
 
 collection-visit@^1.0.0:
   version "1.0.0"
@@ -2323,13 +2331,13 @@ discontinuous-range@1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/discontinuous-range/-/discontinuous-range-1.0.0.tgz#e38331f0844bba49b9a9cb71c771585aab1bc65a"
 
-doctoc@1.3.1:
-  version "1.3.1"
-  resolved "https://registry.yarnpkg.com/doctoc/-/doctoc-1.3.1.tgz#f012e3603e3156254c2ef22ac88c7190f55426ba"
+doctoc@1.4.0:
+  version "1.4.0"
+  resolved "https://registry.yarnpkg.com/doctoc/-/doctoc-1.4.0.tgz#3115aa61d0a92f0abb0672036918ea904f5b9e02"
   dependencies:
+    "@textlint/markdown-to-ast" "~6.0.9"
     anchor-markdown-header "^0.5.5"
     htmlparser2 "~3.9.2"
-    markdown-to-ast "~3.4.0"
     minimist "~1.2.0"
     underscore "~1.8.3"
     update-section "^0.3.0"
@@ -2891,6 +2899,12 @@ fast-levenshtein@~2.0.4:
   version "2.0.6"
   resolved "https://registry.yarnpkg.com/fast-levenshtein/-/fast-levenshtein-2.0.6.tgz#3d8a5c66883a16a30ca8643e851f19baa7797917"
 
+fault@^1.0.1:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/fault/-/fault-1.0.2.tgz#c3d0fec202f172a3a4d414042ad2bb5e2a3ffbaa"
+  dependencies:
+    format "^0.2.2"
+
 fb-watchman@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/fb-watchman/-/fb-watchman-2.0.0.tgz#54e9abf7dfa2f26cd9b1636c588c1afc05de5d58"
@@ -3034,6 +3048,10 @@ form-data@~2.3.1:
     combined-stream "^1.0.5"
     mime-types "^2.1.12"
 
+format@^0.2.2:
+  version "0.2.2"
+  resolved "https://registry.yarnpkg.com/format/-/format-0.2.2.tgz#d6170107e9efdc4ed30c9dc39016df942b5cb58b"
+
 fragment-cache@^0.2.1:
   version "0.2.1"
   resolved "https://registry.yarnpkg.com/fragment-cache/-/fragment-cache-0.2.1.tgz#4290fad27f13e89be7f33799c6bc5a0abfff0d19"
@@ -3653,6 +3671,10 @@ is-boolean-object@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/is-boolean-object/-/is-boolean-object-1.0.0.tgz#98f8b28030684219a95f375cfbd88ce3405dff93"
 
+is-buffer@^1.1.4:
+  version "1.1.6"
+  resolved "https://registry.yarnpkg.com/is-buffer/-/is-buffer-1.1.6.tgz#efaa2ea9daa0d7ab2ea13a97b2b8ad51fefbe8be"
+
 is-buffer@^1.1.5:
   version "1.1.5"
   resolved "https://registry.yarnpkg.com/is-buffer/-/is-buffer-1.1.5.tgz#1f3b26ef613b214b88cbca23cc6c01d87961eecc"
@@ -3964,10 +3986,18 @@ is-valid-glob@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/is-valid-glob/-/is-valid-glob-1.0.0.tgz#29bf3eff701be2d4d315dbacc39bc39fe8f601aa"
 
+is-whitespace-character@^1.0.0:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/is-whitespace-character/-/is-whitespace-character-1.0.2.tgz#ede53b4c6f6fb3874533751ec9280d01928d03ed"
+
 is-windows@^1.0.1, is-windows@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/is-windows/-/is-windows-1.0.2.tgz#d1850eb9791ecd18e6182ce12a30f396634bb19d"
 
+is-word-character@^1.0.0:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/is-word-character/-/is-word-character-1.0.2.tgz#46a5dac3f2a1840898b91e576cd40d493f3ae553"
+
 is@~0.2.6:
   version "0.2.7"
   resolved "https://registry.yarnpkg.com/is/-/is-0.2.7.tgz#3b34a2c48f359972f35042849193ae7264b63562"
@@ -4842,10 +4872,6 @@ log-update@^1.0.2:
     ansi-escapes "^1.0.0"
     cli-cursor "^1.0.2"
 
-longest-streak@^1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/longest-streak/-/longest-streak-1.0.0.tgz#d06597c4d4c31b52ccb1f5d8f8fe7148eafd6965"
-
 longest@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/longest/-/longest-1.0.1.tgz#30a0b2da38f73770e8294a0d22e6625ed77d0097"
@@ -4920,18 +4946,9 @@ map-visit@^1.0.0:
   dependencies:
     object-visit "^1.0.0"
 
-markdown-table@^0.4.0:
-  version "0.4.0"
-  resolved "https://registry.yarnpkg.com/markdown-table/-/markdown-table-0.4.0.tgz#890c2c1b3bfe83fb00e4129b8e4cfe645270f9d1"
-
-markdown-to-ast@~3.4.0:
-  version "3.4.0"
-  resolved "https://registry.yarnpkg.com/markdown-to-ast/-/markdown-to-ast-3.4.0.tgz#0e2cba81390b0549a9153ec3b0d915b61c164be7"
-  dependencies:
-    debug "^2.1.3"
-    remark "^5.0.1"
-    structured-source "^3.0.2"
-    traverse "^0.6.6"
+markdown-escapes@^1.0.0:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/markdown-escapes/-/markdown-escapes-1.0.2.tgz#e639cbde7b99c841c0bacc8a07982873b46d2122"
 
 marked-terminal@^1.6.2:
   version "1.7.0"
@@ -5570,9 +5587,9 @@ parse-asn1@^5.0.0:
     evp_bytestokey "^1.0.0"
     pbkdf2 "^3.0.3"
 
-parse-entities@^1.0.2:
-  version "1.1.1"
-  resolved "https://registry.yarnpkg.com/parse-entities/-/parse-entities-1.1.1.tgz#8112d88471319f27abae4d64964b122fe4e1b890"
+parse-entities@^1.1.0:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/parse-entities/-/parse-entities-1.2.0.tgz#9deac087661b2e36814153cb78d7e54a4c5fd6f4"
   dependencies:
     character-entities "^1.0.0"
     character-entities-legacy "^1.0.0"
@@ -6142,40 +6159,32 @@ regjsparser@^0.1.4:
   dependencies:
     jsesc "~0.5.0"
 
-remark-parse@^1.1.0:
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/remark-parse/-/remark-parse-1.1.0.tgz#c3ca10f9a8da04615c28f09aa4e304510526ec21"
+remark-frontmatter@^1.2.0:
+  version "1.3.1"
+  resolved "https://registry.yarnpkg.com/remark-frontmatter/-/remark-frontmatter-1.3.1.tgz#bc28c0c913fa0b9dd26f17304bc47b856b2ea2de"
   dependencies:
-    collapse-white-space "^1.0.0"
-    extend "^3.0.0"
-    parse-entities "^1.0.2"
+    fault "^1.0.1"
+    xtend "^4.0.1"
+
+remark-parse@^5.0.0:
+  version "5.0.0"
+  resolved "https://registry.yarnpkg.com/remark-parse/-/remark-parse-5.0.0.tgz#4c077f9e499044d1d5c13f80d7a98cf7b9285d95"
+  dependencies:
+    collapse-white-space "^1.0.2"
+    is-alphabetical "^1.0.0"
+    is-decimal "^1.0.0"
+    is-whitespace-character "^1.0.0"
+    is-word-character "^1.0.0"
+    markdown-escapes "^1.0.0"
+    parse-entities "^1.1.0"
     repeat-string "^1.5.4"
+    state-toggle "^1.0.0"
     trim "0.0.1"
     trim-trailing-lines "^1.0.0"
     unherit "^1.0.4"
     unist-util-remove-position "^1.0.0"
     vfile-location "^2.0.0"
-
-remark-stringify@^1.1.0:
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/remark-stringify/-/remark-stringify-1.1.0.tgz#a7105e25b9ee2bf9a49b75d2c423f11b06ae2092"
-  dependencies:
-    ccount "^1.0.0"
-    extend "^3.0.0"
-    longest-streak "^1.0.0"
-    markdown-table "^0.4.0"
-    parse-entities "^1.0.2"
-    repeat-string "^1.5.4"
-    stringify-entities "^1.0.1"
-    unherit "^1.0.4"
-
-remark@^5.0.1:
-  version "5.1.0"
-  resolved "https://registry.yarnpkg.com/remark/-/remark-5.1.0.tgz#cb463bd3dbcb4b99794935eee1cf71d7a8e3068c"
-  dependencies:
-    remark-parse "^1.1.0"
-    remark-stringify "^1.1.0"
-    unified "^4.1.1"
+    xtend "^4.0.1"
 
 remove-bom-buffer@^3.0.0:
   version "3.0.0"
@@ -6210,7 +6219,7 @@ repeating@^2.0.0:
   dependencies:
     is-finite "^1.0.0"
 
-replace-ext@^1.0.0:
+replace-ext@1.0.0, replace-ext@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/replace-ext/-/replace-ext-1.0.0.tgz#de63128373fcbf7c3ccfa4de5a480c45a67958eb"
 
@@ -6786,6 +6795,10 @@ staged-git-files@1.1.1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/staged-git-files/-/staged-git-files-1.1.1.tgz#37c2218ef0d6d26178b1310719309a16a59f8f7b"
 
+state-toggle@^1.0.0:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/state-toggle/-/state-toggle-1.0.1.tgz#c3cb0974f40a6a0f8e905b96789eb41afa1cde3a"
+
 static-extend@^0.1.1:
   version "0.1.2"
   resolved "https://registry.yarnpkg.com/static-extend/-/static-extend-0.1.2.tgz#60809c39cbff55337226fd5e0b520f341f1fb5c6"
@@ -6855,15 +6868,6 @@ string_decoder@~1.1.1:
   dependencies:
     safe-buffer "~5.1.0"
 
-stringify-entities@^1.0.1:
-  version "1.3.1"
-  resolved "https://registry.yarnpkg.com/stringify-entities/-/stringify-entities-1.3.1.tgz#b150ec2d72ac4c1b5f324b51fb6b28c9cdff058c"
-  dependencies:
-    character-entities-html4 "^1.0.0"
-    character-entities-legacy "^1.0.0"
-    is-alphanumerical "^1.0.0"
-    is-hexadecimal "^1.0.0"
-
 stringify-object@3.3.0:
   version "3.3.0"
   resolved "https://registry.yarnpkg.com/stringify-object/-/stringify-object-3.3.0.tgz#703065aefca19300d3ce88af4f5b3956d7556629"
@@ -7221,16 +7225,16 @@ unherit@^1.0.4:
     inherits "^2.0.1"
     xtend "^4.0.1"
 
-unified@^4.1.1:
-  version "4.2.1"
-  resolved "https://registry.yarnpkg.com/unified/-/unified-4.2.1.tgz#76ff43aa8da430f6e7e4a55c84ebac2ad2cfcd2e"
+unified@^6.1.6:
+  version "6.2.0"
+  resolved "https://registry.yarnpkg.com/unified/-/unified-6.2.0.tgz#7fbd630f719126d67d40c644b7e3f617035f6dba"
   dependencies:
     bail "^1.0.0"
     extend "^3.0.0"
-    has "^1.0.1"
-    once "^1.3.3"
+    is-plain-obj "^1.1.0"
     trough "^1.0.0"
-    vfile "^1.0.0"
+    vfile "^2.0.0"
+    x-is-string "^0.1.0"
 
 union-value@^1.0.0:
   version "1.0.0"
@@ -7260,6 +7264,10 @@ unist-util-remove-position@^1.0.0:
   dependencies:
     unist-util-visit "^1.1.0"
 
+unist-util-stringify-position@^1.0.0, unist-util-stringify-position@^1.1.1:
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/unist-util-stringify-position/-/unist-util-stringify-position-1.1.2.tgz#3f37fcf351279dcbca7480ab5889bb8a832ee1c6"
+
 unist-util-visit@^1.1.0:
   version "1.1.3"
   resolved "https://registry.yarnpkg.com/unist-util-visit/-/unist-util-visit-1.1.3.tgz#ec268e731b9d277a79a5b5aa0643990e405d600b"
@@ -7374,9 +7382,20 @@ vfile-location@^2.0.0:
   version "2.0.2"
   resolved "https://registry.yarnpkg.com/vfile-location/-/vfile-location-2.0.2.tgz#d3675c59c877498e492b4756ff65e4af1a752255"
 
-vfile@^1.0.0:
-  version "1.4.0"
-  resolved "https://registry.yarnpkg.com/vfile/-/vfile-1.4.0.tgz#c0fd6fa484f8debdb771f68c31ed75d88da97fe7"
+vfile-message@^1.0.0:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/vfile-message/-/vfile-message-1.1.1.tgz#5833ae078a1dfa2d96e9647886cd32993ab313e1"
+  dependencies:
+    unist-util-stringify-position "^1.1.1"
+
+vfile@^2.0.0:
+  version "2.3.0"
+  resolved "https://registry.yarnpkg.com/vfile/-/vfile-2.3.0.tgz#e62d8e72b20e83c324bc6c67278ee272488bf84a"
+  dependencies:
+    is-buffer "^1.1.4"
+    replace-ext "1.0.0"
+    unist-util-stringify-position "^1.0.0"
+    vfile-message "^1.0.0"
 
 vinyl-fs@^3.0.3:
   version "3.0.3"
@@ -7521,6 +7540,10 @@ write@^0.2.1:
   dependencies:
     mkdirp "^0.5.1"
 
+x-is-string@^0.1.0:
+  version "0.1.0"
+  resolved "https://registry.yarnpkg.com/x-is-string/-/x-is-string-0.1.0.tgz#474b50865af3a49a9c4657f05acd145458f77d82"
+
 xdg-basedir@^3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/xdg-basedir/-/xdg-basedir-3.0.0.tgz#496b2cc109eca8dbacfe2dc72b603c17c5870ad4"