diff --git a/package.json b/package.json
index 2366f42..61c0b4d 100644
--- a/package.json
+++ b/package.json
@@ -43,7 +43,7 @@
     "sanitize.css": "^5.0.0",
     "sass-loader": "^6.0.5",
     "standard": "^11.0.0",
-    "style-loader": "^0.20.0",
+    "style-loader": "^0.21.0",
     "webpack": "^3.0.0"
   }
 }
diff --git a/yarn.lock b/yarn.lock
index ecab3ad..deeb371 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -38,6 +38,10 @@ ajv-keywords@^2.0.0, ajv-keywords@^2.1.0:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/ajv-keywords/-/ajv-keywords-2.1.1.tgz#617997fc5f60576894c435f940d819e135b80762"
 
+ajv-keywords@^3.1.0:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/ajv-keywords/-/ajv-keywords-3.1.0.tgz#ac2b27939c543e95d2c06e7f7f5c27be4aa543be"
+
 ajv@^4.9.1:
   version "4.11.8"
   resolved "https://registry.yarnpkg.com/ajv/-/ajv-4.11.8.tgz#82ffb02b29e662ae53bdc20af15947706739c536"
@@ -54,6 +58,15 @@ ajv@^5.0.0, ajv@^5.1.0, ajv@^5.1.5, ajv@^5.2.3, ajv@^5.3.0:
     fast-json-stable-stringify "^2.0.0"
     json-schema-traverse "^0.3.0"
 
+ajv@^6.1.0:
+  version "6.4.0"
+  resolved "https://registry.yarnpkg.com/ajv/-/ajv-6.4.0.tgz#d3aff78e9277549771daf0164cff48482b754fc6"
+  dependencies:
+    fast-deep-equal "^1.0.0"
+    fast-json-stable-stringify "^2.0.0"
+    json-schema-traverse "^0.3.0"
+    uri-js "^3.0.2"
+
 align-text@^0.1.1, align-text@^0.1.3:
   version "0.1.4"
   resolved "https://registry.yarnpkg.com/align-text/-/align-text-0.1.4.tgz#0cd90a561093f35d0a99256c22b7069433fad117"
@@ -4241,6 +4254,10 @@ punycode@^1.2.4, punycode@^1.4.1:
   version "1.4.1"
   resolved "https://registry.yarnpkg.com/punycode/-/punycode-1.4.1.tgz#c0d5a63b2718800ad8e1eb0fa5269c84dd41845e"
 
+punycode@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/punycode/-/punycode-2.1.0.tgz#5f863edc89b96db09074bad7947bf09056ca4e7d"
+
 q@^1.1.2:
   version "1.5.1"
   resolved "https://registry.yarnpkg.com/q/-/q-1.5.1.tgz#7e32f75b41381291d04611f1bf14109ac00651d7"
@@ -4663,12 +4680,12 @@ schema-utils@^0.3.0:
   dependencies:
     ajv "^5.0.0"
 
-schema-utils@^0.4.3:
-  version "0.4.3"
-  resolved "https://registry.yarnpkg.com/schema-utils/-/schema-utils-0.4.3.tgz#e2a594d3395834d5e15da22b48be13517859458e"
+schema-utils@^0.4.5:
+  version "0.4.5"
+  resolved "https://registry.yarnpkg.com/schema-utils/-/schema-utils-0.4.5.tgz#21836f0608aac17b78f9e3e24daff14a5ca13a3e"
   dependencies:
-    ajv "^5.0.0"
-    ajv-keywords "^2.1.0"
+    ajv "^6.1.0"
+    ajv-keywords "^3.1.0"
 
 scss-tokenizer@^0.2.3:
   version "0.2.3"
@@ -5021,12 +5038,12 @@ 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"
 
-style-loader@^0.20.0:
-  version "0.20.1"
-  resolved "https://registry.yarnpkg.com/style-loader/-/style-loader-0.20.1.tgz#33ac2bf4d5c65a8906bc586ad253334c246998d0"
+style-loader@^0.21.0:
+  version "0.21.0"
+  resolved "https://registry.yarnpkg.com/style-loader/-/style-loader-0.21.0.tgz#68c52e5eb2afc9ca92b6274be277ee59aea3a852"
   dependencies:
     loader-utils "^1.1.0"
-    schema-utils "^0.4.3"
+    schema-utils "^0.4.5"
 
 supports-color@^2.0.0:
   version "2.0.0"
@@ -5300,6 +5317,12 @@ unset-value@^1.0.0:
     has-value "^0.3.1"
     isobject "^3.0.0"
 
+uri-js@^3.0.2:
+  version "3.0.2"
+  resolved "https://registry.yarnpkg.com/uri-js/-/uri-js-3.0.2.tgz#f90b858507f81dea4dcfbb3c4c3dbfa2b557faaa"
+  dependencies:
+    punycode "^2.1.0"
+
 urix@^0.1.0:
   version "0.1.0"
   resolved "https://registry.yarnpkg.com/urix/-/urix-0.1.0.tgz#da937f7a62e21fec1fd18d49b35c2935067a6c72"