diff --git a/package.json b/package.json
index 6c1f31f..c6f3222 100644
--- a/package.json
+++ b/package.json
@@ -27,7 +27,7 @@
     "gatsby-transformer-remark": "^2.6.21",
     "gatsby-transformer-sharp": "2.2.13",
     "katex": "0.11.0",
-    "prismjs": "1.21.0",
+    "prismjs": "1.27.0",
     "react": "16.9.0",
     "react-dom": "16.9.0",
     "react-helmet": "5.2.1",
diff --git a/yarn.lock b/yarn.lock
index 10fc0ff..8cbeaaa 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3370,15 +3370,6 @@ cli-width@^2.0.0:
   resolved "https://registry.npm.taobao.org/cli-width/download/cli-width-2.2.0.tgz#ff19ede8a9a5e579324147b0c11f0fbcbabed639"
   integrity sha1-/xnt6Kml5XkyQUewwR8PvLq+1jk=
 
-clipboard@^2.0.0:
-  version "2.0.4"
-  resolved "https://registry.npm.taobao.org/clipboard/download/clipboard-2.0.4.tgz#836dafd66cf0fea5d71ce5d5b0bf6e958009112d"
-  integrity sha1-g22v1mzw/qXXHOXVsL9ulYAJES0=
-  dependencies:
-    good-listener "^1.2.2"
-    select "^1.1.2"
-    tiny-emitter "^2.0.0"
-
 clipboardy@^2.1.0:
   version "2.2.0"
   resolved "https://registry.npm.taobao.org/clipboardy/download/clipboardy-2.2.0.tgz#681e2af495924bcaeed159db3287ef5a5f4d2ee1"
@@ -4372,11 +4363,6 @@ delayed-stream@~1.0.0:
   resolved "https://registry.npm.taobao.org/delayed-stream/download/delayed-stream-1.0.0.tgz#df3ae199acadfb7d440aaae0b29e2272b24ec619"
   integrity sha1-3zrhmayt+31ECqrgsp4icrJOxhk=
 
-delegate@^3.1.2:
-  version "3.2.0"
-  resolved "https://registry.npm.taobao.org/delegate/download/delegate-3.2.0.tgz#b66b71c3158522e8ab5744f720d8ca0c2af59166"
-  integrity sha1-tmtxwxWFIuirV0T3INjKDCr1kWY=
-
 delegates@^1.0.0:
   version "1.0.0"
   resolved "https://registry.npm.taobao.org/delegates/download/delegates-1.0.0.tgz#84c6e159b81904fdca59a0ef44cd870d31250f9a"
@@ -6712,13 +6698,6 @@ globby@^8.0.1:
     pify "^3.0.0"
     slash "^1.0.0"
 
-good-listener@^1.2.2:
-  version "1.2.2"
-  resolved "https://registry.npm.taobao.org/good-listener/download/good-listener-1.2.2.tgz#d53b30cdf9313dffb7dc9a0d477096aa6d145c50"
-  integrity sha1-1TswzfkxPf+33JoNR3CWqm0UXFA=
-  dependencies:
-    delegate "^3.1.2"
-
 got@8.0.0:
   version "8.0.0"
   resolved "https://registry.npm.taobao.org/got/download/got-8.0.0.tgz#57a11f841edc58e3f3eba4b3ac220faf5133770f"
@@ -11062,12 +11041,10 @@ pretty-error@^2.1.1:
     renderkid "^2.0.1"
     utila "~0.4"
 
-prismjs@1.21.0:
-  version "1.21.0"
-  resolved "https://registry.yarnpkg.com/prismjs/-/prismjs-1.21.0.tgz#36c086ec36b45319ec4218ee164c110f9fc015a3"
-  integrity sha512-uGdSIu1nk3kej2iZsLyDoJ7e9bnPzIgY0naW/HdknGj61zScaprVEVGHrPoXqI+M9sP0NDnTK2jpkvmldpuqDw==
-  optionalDependencies:
-    clipboard "^2.0.0"
+prismjs@1.27.0:
+  version "1.27.0"
+  resolved "https://registry.yarnpkg.com/prismjs/-/prismjs-1.27.0.tgz#bb6ee3138a0b438a3653dd4d6ce0cc6510a45057"
+  integrity sha512-t13BGPUlFDR7wRB5kQDG4jjl7XeuH6jbJGt11JHPL96qwsEHNX2+68tFXqc1/k+/jALsbSWJKUOT/hcYAZ5LkA==
 
 private@^0.1.6:
   version "0.1.8"
@@ -12706,11 +12683,6 @@ select-hose@^2.0.0:
   resolved "https://registry.npm.taobao.org/select-hose/download/select-hose-2.0.0.tgz#625d8658f865af43ec962bfc376a37359a4994ca"
   integrity sha1-Yl2GWPhlr0Psliv8N2o3NZpJlMo=
 
-select@^1.1.2:
-  version "1.1.2"
-  resolved "https://registry.npm.taobao.org/select/download/select-1.1.2.tgz#0e7350acdec80b1108528786ec1d4418d11b396d"
-  integrity sha1-DnNQrN7ICxEIUoeG7B1EGNEbOW0=
-
 selfsigned@^1.10.7:
   version "1.10.7"
   resolved "https://registry.npm.taobao.org/selfsigned/download/selfsigned-1.10.7.tgz#da5819fd049d5574f28e88a9bcc6dbc6e6f3906b"
@@ -13888,11 +13860,6 @@ timsort@^0.3.0:
   resolved "https://registry.npm.taobao.org/timsort/download/timsort-0.3.0.tgz#405411a8e7e6339fe64db9a234de11dc31e02bd4"
   integrity sha1-QFQRqOfmM5/mTbmiNN4R3DHgK9Q=
 
-tiny-emitter@^2.0.0:
-  version "2.1.0"
-  resolved "https://registry.npm.taobao.org/tiny-emitter/download/tiny-emitter-2.1.0.tgz#1d1a56edfc51c43e863cbb5382a72330e3555423"
-  integrity sha1-HRpW7fxRxD6GPLtTgqcjMONVVCM=
-
 tinycolor2@^1.4.1:
   version "1.4.1"
   resolved "https://registry.npm.taobao.org/tinycolor2/download/tinycolor2-1.4.1.tgz#f4fad333447bc0b07d4dc8e9209d8f39a8ac77e8"