diff --git a/package.json b/package.json
index 41f998d238..6684fdbd4d 100644
--- a/package.json
+++ b/package.json
@@ -74,7 +74,6 @@
     "rollup-watch": "^4.3.1",
     "source-map": "^0.5.6",
     "source-map-support": "^0.4.8",
-    "stylus": "^0.54.5",
     "ts-node": "^3.3.0",
     "tslib": "^1.8.0",
     "typescript": "^2.6.1"
diff --git a/yarn.lock b/yarn.lock
index e819c49ef0..c38c354a78 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -616,10 +616,6 @@ cryptiles@3.x.x:
   dependencies:
     boom "5.x.x"
 
-css-parse@1.7.x:
-  version "1.7.0"
-  resolved "https://registry.yarnpkg.com/css-parse/-/css-parse-1.7.0.tgz#321f6cf73782a6ff751111390fc05e2c657d8c9b"
-
 css-tree@1.0.0-alpha22:
   version "1.0.0-alpha22"
   resolved "https://registry.yarnpkg.com/css-tree/-/css-tree-1.0.0-alpha22.tgz#338a006e331c7b4f9dab7b6af539ece56ff78af2"
@@ -653,12 +649,6 @@ debug-log@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/debug-log/-/debug-log-1.0.1.tgz#2307632d4c04382b8df8a32f70b895046d52745f"
 
-debug@*, debug@^3.0.1, debug@^3.1.0:
-  version "3.1.0"
-  resolved "https://registry.yarnpkg.com/debug/-/debug-3.1.0.tgz#5bb5a0672628b64149566ba16819e61518c67261"
-  dependencies:
-    ms "2.0.0"
-
 debug@2.6.8:
   version "2.6.8"
   resolved "https://registry.yarnpkg.com/debug/-/debug-2.6.8.tgz#e731531ca2ede27d188222427da17821d68ff4fc"
@@ -671,6 +661,12 @@ debug@2.6.9, debug@^2.1.3, debug@^2.2.0, debug@^2.6.8:
   dependencies:
     ms "2.0.0"
 
+debug@^3.0.1, debug@^3.1.0:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/debug/-/debug-3.1.0.tgz#5bb5a0672628b64149566ba16819e61518c67261"
+  dependencies:
+    ms "2.0.0"
+
 decamelize@^1.0.0, decamelize@^1.1.1, decamelize@^1.1.2:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/decamelize/-/decamelize-1.2.0.tgz#f6534d15148269b20352e7bee26f501f9a191290"
@@ -1255,17 +1251,6 @@ glob-parent@^2.0.0:
   dependencies:
     is-glob "^2.0.0"
 
-glob@7.0.x:
-  version "7.0.6"
-  resolved "https://registry.yarnpkg.com/glob/-/glob-7.0.6.tgz#211bafaf49e525b8cd93260d14ab136152b3f57a"
-  dependencies:
-    fs.realpath "^1.0.0"
-    inflight "^1.0.4"
-    inherits "2"
-    minimatch "^3.0.2"
-    once "^1.3.0"
-    path-is-absolute "^1.0.0"
-
 glob@7.1.1:
   version "7.1.1"
   resolved "https://registry.yarnpkg.com/glob/-/glob-7.1.1.tgz#805211df04faaf1c63a3600306cdf5ade50b2ec8"
@@ -2123,7 +2108,7 @@ mkdirp@0.5.0:
   dependencies:
     minimist "0.0.8"
 
-mkdirp@0.5.1, mkdirp@0.5.x, "mkdirp@>=0.5 0", mkdirp@^0.5.0, mkdirp@^0.5.1:
+mkdirp@0.5.1, "mkdirp@>=0.5 0", mkdirp@^0.5.0, mkdirp@^0.5.1:
   version "0.5.1"
   resolved "https://registry.yarnpkg.com/mkdirp/-/mkdirp-0.5.1.tgz#30057438eac6cf7f8c4767f38648d6697d75c903"
   dependencies:
@@ -2913,10 +2898,6 @@ safe-buffer@^5.0.1, safe-buffer@^5.1.1, safe-buffer@~5.1.0, safe-buffer@~5.1.1:
   version "5.1.1"
   resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.1.1.tgz#893312af69b2123def71f57889001671eeb2c853"
 
-sax@0.5.x:
-  version "0.5.8"
-  resolved "https://registry.yarnpkg.com/sax/-/sax-0.5.8.tgz#d472db228eb331c2506b0e8c15524adb939d12c1"
-
 sax@^1.2.1:
   version "1.2.4"
   resolved "https://registry.yarnpkg.com/sax/-/sax-1.2.4.tgz#2816234e2378bddc4e5354fab5caa895df7100d9"
@@ -2989,12 +2970,6 @@ source-map-support@^0.4.0, source-map-support@^0.4.8:
   dependencies:
     source-map "^0.5.6"
 
-source-map@0.1.x:
-  version "0.1.43"
-  resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.1.43.tgz#c24bc146ca517c1471f5dacbe2571b2b7f9e3346"
-  dependencies:
-    amdefine ">=0.0.4"
-
 source-map@^0.4.4:
   version "0.4.4"
   resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.4.4.tgz#eba4f5da9c0dc999de68032d8b4f76173652036b"
@@ -3127,17 +3102,6 @@ strip-json-comments@^2.0.0, strip-json-comments@~2.0.1:
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/strip-json-comments/-/strip-json-comments-2.0.1.tgz#3c531942e908c2697c0ec344858c286c7ca0a60a"
 
-stylus@^0.54.5:
-  version "0.54.5"
-  resolved "https://registry.yarnpkg.com/stylus/-/stylus-0.54.5.tgz#42b9560931ca7090ce8515a798ba9e6aa3d6dc79"
-  dependencies:
-    css-parse "1.7.x"
-    debug "*"
-    glob "7.0.x"
-    mkdirp "0.5.x"
-    sax "0.5.x"
-    source-map "0.1.x"
-
 sumchecker@^1.2.0:
   version "1.3.1"
   resolved "https://registry.yarnpkg.com/sumchecker/-/sumchecker-1.3.1.tgz#79bb3b4456dd04f18ebdbc0d703a1d1daec5105d"