diff --git a/yarn.lock b/yarn.lock
index b3205a0..ecc9d09 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1730,12 +1730,6 @@ detect-node@^2.0.4:
   version "2.0.4"
   resolved "https://registry.yarnpkg.com/detect-node/-/detect-node-2.0.4.tgz#014ee8f8f669c5c58023da64b8179c083a28c46c"
 
-dida.js@^1.0.1:
-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/dida.js/-/dida.js-1.0.1.tgz#76b72d27f016ec3fa6f166013468b7f5439b25ca"
-  dependencies:
-    option-validator "^2.0.5"
-
 diffie-hellman@^5.0.0:
   version "5.0.3"
   resolved "https://registry.yarnpkg.com/diffie-hellman/-/diffie-hellman-5.0.3.tgz#40e8ee98f55a2149607146921c63e1ae5f3d2875"
@@ -2084,16 +2078,6 @@ flush-write-stream@^1.0.0:
     inherits "^2.0.3"
     readable-stream "^2.3.6"
 
-flvplayer@^1.1.8:
-  version "1.1.8"
-  resolved "https://registry.yarnpkg.com/flvplayer/-/flvplayer-1.1.8.tgz#81e432b9ebcfac44869d182177eff196b1a04630"
-  dependencies:
-    dida.js "^1.0.1"
-    option-validator "^2.0.5"
-    screenfull "^5.0.2"
-    yuv-buffer "^1.0.0"
-    yuv-canvas "^1.2.6"
-
 follow-redirects@^1.0.0:
   version "1.13.0"
   resolved "https://registry.yarnpkg.com/follow-redirects/-/follow-redirects-1.13.0.tgz#b42e8d93a2a7eea5ed88633676d6597bc8e384db"
@@ -3126,12 +3110,6 @@ optimist@^0.6.1:
     minimist "~0.0.1"
     wordwrap "~0.0.2"
 
-option-validator@^2.0.5:
-  version "2.0.5"
-  resolved "https://registry.yarnpkg.com/option-validator/-/option-validator-2.0.5.tgz#1e4e188eb7d2cad14347a7a2d96fc5ac6077a5fc"
-  dependencies:
-    kind-of "^6.0.2"
-
 original@^1.0.0:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/original/-/original-1.0.2.tgz#e442a61cffe1c5fd20a65f3261c26663b303f25f"
@@ -3330,8 +3308,8 @@ postcss-value-parser@^4.1.0:
   resolved "https://registry.yarnpkg.com/postcss-value-parser/-/postcss-value-parser-4.1.0.tgz#443f6a20ced6481a2bda4fa8532a6e55d789a2cb"
 
 postcss@^7.0.14, postcss@^7.0.32, postcss@^7.0.5, postcss@^7.0.6:
-  version "7.0.32"
-  resolved "https://registry.yarnpkg.com/postcss/-/postcss-7.0.32.tgz#4310d6ee347053da3433db2be492883d62cec59d"
+  version "7.0.36"
+  resolved "https://registry.yarnpkg.com/postcss/-/postcss-7.0.36.tgz#056f8cffa939662a8f5905950c07d5285644dfcb"
   dependencies:
     chalk "^2.4.2"
     source-map "^0.6.1"
@@ -3652,10 +3630,6 @@ schema-utils@^2.6.5, schema-utils@^2.6.6, schema-utils@^2.7.0:
     ajv "^6.12.2"
     ajv-keywords "^3.4.1"
 
-screenfull@^5.0.2:
-  version "5.0.2"
-  resolved "https://registry.yarnpkg.com/screenfull/-/screenfull-5.0.2.tgz#b9acdcf1ec676a948674df5cd0ff66b902b0bed7"
-
 select-hose@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/select-hose/-/select-hose-2.0.0.tgz#625d8658f865af43ec962bfc376a37359a4994ca"
@@ -4449,11 +4423,3 @@ yargs@^13.3.2:
     which-module "^2.0.0"
     y18n "^4.0.0"
     yargs-parser "^13.1.2"
-
-yuv-buffer@^1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/yuv-buffer/-/yuv-buffer-1.0.0.tgz#09a454858d74df2bc31cd588edd70ffcb86bfc9a"
-
-yuv-canvas@^1.2.6:
-  version "1.2.6"
-  resolved "https://registry.yarnpkg.com/yuv-canvas/-/yuv-canvas-1.2.6.tgz#246452196fca9e581f09abed9b90c94aff6014e2"