diff --git a/package.json b/package.json
index cd51bdc..cd2f6d8 100644
--- a/package.json
+++ b/package.json
@@ -33,7 +33,7 @@
     "css-loader": "^3.4.2",
     "debug": "^4.1.1",
     "ejs": "^3.0.1",
-    "file-loader": "^5.1.0",
+    "file-loader": "^6.0.0",
     "iso8601-duration": "^1.1.1",
     "kcors": "^2.2.1",
     "koa": "^2.11.0",
diff --git a/yarn.lock b/yarn.lock
index 443d23e..7783bb8 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1102,6 +1102,16 @@ ajv@^6.1.0, ajv@^6.10.0, ajv@^6.10.2, ajv@^6.5.5, ajv@^6.9.1:
     json-schema-traverse "^0.4.1"
     uri-js "^4.2.2"
 
+ajv@^6.12.0:
+  version "6.12.0"
+  resolved "https://registry.yarnpkg.com/ajv/-/ajv-6.12.0.tgz#06d60b96d87b8454a5adaba86e7854da629db4b7"
+  integrity sha512-D6gFiFA0RRLyUbvijN74DWAjXSFxWKaWP7mldxkVhyhAV3+SWA9HEJPHQ2c9soIeTFJqcSdFDGFgdqs1iUU2Hw==
+  dependencies:
+    fast-deep-equal "^3.1.1"
+    fast-json-stable-stringify "^2.0.0"
+    json-schema-traverse "^0.4.1"
+    uri-js "^4.2.2"
+
 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"
@@ -3216,13 +3226,13 @@ file-entry-cache@^5.0.1:
   dependencies:
     flat-cache "^2.0.1"
 
-file-loader@^5.1.0:
-  version "5.1.0"
-  resolved "https://registry.yarnpkg.com/file-loader/-/file-loader-5.1.0.tgz#cb56c070efc0e40666424309bd0d9e45ac6f2bb8"
-  integrity sha512-u/VkLGskw3Ue59nyOwUwXI/6nuBCo7KBkniB/l7ICwr/7cPNGsL1WCXUp3GB0qgOOKU1TiP49bv4DZF/LJqprg==
+file-loader@^6.0.0:
+  version "6.0.0"
+  resolved "https://registry.yarnpkg.com/file-loader/-/file-loader-6.0.0.tgz#97bbfaab7a2460c07bcbd72d3a6922407f67649f"
+  integrity sha512-/aMOAYEFXDdjG0wytpTL5YQLfZnnTmLNjn+AIrJ/6HVnTfDqLsVKUUwkDf4I4kgex36BvjuXEn/TX9B/1ESyqQ==
   dependencies:
-    loader-utils "^1.4.0"
-    schema-utils "^2.5.0"
+    loader-utils "^2.0.0"
+    schema-utils "^2.6.5"
 
 fill-range@^4.0.0:
   version "4.0.0"
@@ -4504,6 +4514,13 @@ json5@^2.1.0:
   dependencies:
     minimist "^1.2.0"
 
+json5@^2.1.2:
+  version "2.1.2"
+  resolved "https://registry.yarnpkg.com/json5/-/json5-2.1.2.tgz#43ef1f0af9835dd624751a6b7fa48874fb2d608e"
+  integrity sha512-MoUOQ4WdiN3yxhm7NEVJSJrieAo5hNSLQ5sj05OTRHPL9HOBy8u4Bu88jsC1jvqAdN+E1bJmsUcZH+1HQxliqQ==
+  dependencies:
+    minimist "^1.2.5"
+
 jsonfile@^4.0.0:
   version "4.0.0"
   resolved "https://registry.yarnpkg.com/jsonfile/-/jsonfile-4.0.0.tgz#8771aae0799b64076b76640fca058f9c10e33ecb"
@@ -4825,7 +4842,7 @@ loader-utils@1.2.3:
     emojis-list "^2.0.0"
     json5 "^1.0.1"
 
-loader-utils@^1.0.2, loader-utils@^1.1.0, loader-utils@^1.2.3, loader-utils@^1.4.0:
+loader-utils@^1.0.2, loader-utils@^1.1.0, loader-utils@^1.2.3:
   version "1.4.0"
   resolved "https://registry.yarnpkg.com/loader-utils/-/loader-utils-1.4.0.tgz#c579b5e34cb34b1a74edc6c1fb36bfa371d5a613"
   integrity sha512-qH0WSMBtn/oHuwjy/NucEgbx5dbxxnxup9s4PVXJUDHZBQY+s0NWA9rJf53RBnQZxfch7euUui7hpoAPvALZdA==
@@ -4834,6 +4851,15 @@ loader-utils@^1.0.2, loader-utils@^1.1.0, loader-utils@^1.2.3, loader-utils@^1.4
     emojis-list "^3.0.0"
     json5 "^1.0.1"
 
+loader-utils@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/loader-utils/-/loader-utils-2.0.0.tgz#e4cace5b816d425a166b5f097e10cd12b36064b0"
+  integrity sha512-rP4F0h2RaWSvPEkD7BLDFQnvSf+nK+wr3ESUjNTyAGobqrijmW92zc+SO6d4p4B1wh7+B/Jg1mkQe5NYUEHtHQ==
+  dependencies:
+    big.js "^5.2.2"
+    emojis-list "^3.0.0"
+    json5 "^2.1.2"
+
 locate-path@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/locate-path/-/locate-path-2.0.0.tgz#2b568b265eec944c6d9c0de9c3dbbbca0354cd8e"
@@ -5209,6 +5235,11 @@ minimist@^1.1.3, minimist@^1.2.0:
   resolved "https://registry.yarnpkg.com/minimist/-/minimist-1.2.0.tgz#a35008b20f41383eec1fb914f4cd5df79a264284"
   integrity sha1-o1AIsg9BOD7sH7kU9M1d95omQoQ=
 
+minimist@^1.2.5:
+  version "1.2.5"
+  resolved "https://registry.yarnpkg.com/minimist/-/minimist-1.2.5.tgz#67d66014b66a6a8aaa0c083c5fd58df4e4e97602"
+  integrity sha512-FM9nNUYrRBAELZQT3xeZQ7fmMOBg6nWNmJKTcgsJeaLstP/UODVpGsr5OhXhhXg6f+qtJ8uiZ+PUxkDWcgIXLw==
+
 minimist@~0.0.1:
   version "0.0.10"
   resolved "https://registry.yarnpkg.com/minimist/-/minimist-0.0.10.tgz#de3f98543dbf96082be48ad1a0c7cda836301dcf"
@@ -7098,12 +7129,12 @@ schema-utils@^1.0.0:
     ajv-errors "^1.0.0"
     ajv-keywords "^3.1.0"
 
-schema-utils@^2.5.0, schema-utils@^2.6.0, schema-utils@^2.6.1:
-  version "2.6.4"
-  resolved "https://registry.yarnpkg.com/schema-utils/-/schema-utils-2.6.4.tgz#a27efbf6e4e78689d91872ee3ccfa57d7bdd0f53"
-  integrity sha512-VNjcaUxVnEeun6B2fiiUDjXXBtD4ZSH7pdbfIu1pOFwgptDPLMo/z9jr4sUfsjFVPqDCEin/F7IYlq7/E6yDbQ==
+schema-utils@^2.6.0, schema-utils@^2.6.1, schema-utils@^2.6.5:
+  version "2.6.5"
+  resolved "https://registry.yarnpkg.com/schema-utils/-/schema-utils-2.6.5.tgz#c758f0a7e624263073d396e29cd40aa101152d8a"
+  integrity sha512-5KXuwKziQrTVHh8j/Uxz+QUbxkaLW9X/86NBlx/gnKgtsZA2GIVMUn17qWhRFwF8jdYb3Dig5hRO/W5mZqy6SQ==
   dependencies:
-    ajv "^6.10.2"
+    ajv "^6.12.0"
     ajv-keywords "^3.4.1"
 
 scss-tokenizer@^0.2.3: