diff --git a/package.json b/package.json
index 379d8d5..fbd7bba 100644
--- a/package.json
+++ b/package.json
@@ -33,7 +33,7 @@
     "css-loader": "^4.2.1",
     "debug": "^4.1.1",
     "ejs": "^3.1.3",
-    "file-loader": "^6.0.0",
+    "file-loader": "^6.2.0",
     "iso8601-duration": "^1.1.1",
     "kcors": "^2.2.1",
     "koa": "^2.13.0",
diff --git a/yarn.lock b/yarn.lock
index efd63b9..3cc2055 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1071,6 +1071,11 @@
   resolved "https://registry.yarnpkg.com/@types/json-schema/-/json-schema-7.0.5.tgz#dcce4430e64b443ba8945f0290fb564ad5bac6dd"
   integrity sha512-7+2BITlgjgDhH0vvwZU/HZJVyk+2XUlvxXe8dFMedNX/aMkaOq++rMAFXc0tM7ij15QaWlbdQASBR9dihi+bDQ==
 
+"@types/json-schema@^7.0.6":
+  version "7.0.6"
+  resolved "https://registry.yarnpkg.com/@types/json-schema/-/json-schema-7.0.6.tgz#f4c7ec43e81b319a9815115031709f26987891f0"
+  integrity sha512-3c+yGKvVP5Y9TYBEibGNR+kLtijnj7mYrXRg+WpFb2X9xm04g/DXYkfg4hmzJQosc9snFNUPkbYIhu+KAm6jJw==
+
 "@types/json5@^0.0.29":
   version "0.0.29"
   resolved "https://registry.yarnpkg.com/@types/json5/-/json5-0.0.29.tgz#ee28707ae94e11d2b827bcbe5270bcea7f3e71ee"
@@ -1334,7 +1339,7 @@ ajv-errors@^1.0.0:
   resolved "https://registry.yarnpkg.com/ajv-errors/-/ajv-errors-1.0.1.tgz#f35986aceb91afadec4102fbd85014950cefa64d"
   integrity sha512-DCRfO/4nQ+89p/RK43i8Ezd41EqdGIU4ld7nGF8OQ14oc/we5rEntLCUa7+jrn3nn83BosfwZA0wb4pon2o8iQ==
 
-ajv-keywords@^3.1.0, ajv-keywords@^3.4.1:
+ajv-keywords@^3.1.0, ajv-keywords@^3.4.1, ajv-keywords@^3.5.2:
   version "3.5.2"
   resolved "https://registry.yarnpkg.com/ajv-keywords/-/ajv-keywords-3.5.2.tgz#31f29da5ab6e00d1c2d329acf7b5929614d5014d"
   integrity sha512-5p6WTN0DdTGVQk6VjcEju19IgaHudalcfabD7yhDGeA6bcQnmL+CpveLJq/3hvfwd1aof6L386Ougkx6RfyMIQ==
@@ -1349,6 +1354,16 @@ ajv@^6.1.0, ajv@^6.10.0, ajv@^6.10.2, ajv@^6.12.2:
     json-schema-traverse "^0.4.1"
     uri-js "^4.2.2"
 
+ajv@^6.12.5:
+  version "6.12.6"
+  resolved "https://registry.yarnpkg.com/ajv/-/ajv-6.12.6.tgz#baf5a62e802b07d977034586f8c3baf5adf26df4"
+  integrity sha512-j3fVLgvTo527anyYyJOGTYJbG+vnnQYvE0m5mmkc1TK+nxAppkCLMIL0aZ4dblVCNoGShhm+kzE4ZUykBoMg4g==
+  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"
+
 ajv@^6.5.5:
   version "6.12.2"
   resolved "https://registry.yarnpkg.com/ajv/-/ajv-6.12.2.tgz#c629c5eced17baf314437918d2da88c99d5958cd"
@@ -3580,13 +3595,13 @@ file-entry-cache@^5.0.1:
   dependencies:
     flat-cache "^2.0.1"
 
-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==
+file-loader@^6.2.0:
+  version "6.2.0"
+  resolved "https://registry.yarnpkg.com/file-loader/-/file-loader-6.2.0.tgz#baef7cf8e1840df325e4390b4484879480eebe4d"
+  integrity sha512-qo3glqyTa61Ytg4u73GultjHGjdRyig3tG6lPtyX/jOEJvHif9uB0/OCI2Kif6ctF3caQTW2G5gym21oAsI4pw==
   dependencies:
     loader-utils "^2.0.0"
-    schema-utils "^2.6.5"
+    schema-utils "^3.0.0"
 
 file-uri-to-path@1.0.0:
   version "1.0.0"
@@ -7572,6 +7587,15 @@ schema-utils@^2.6.5, schema-utils@^2.7.0:
     ajv "^6.12.2"
     ajv-keywords "^3.4.1"
 
+schema-utils@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/schema-utils/-/schema-utils-3.0.0.tgz#67502f6aa2b66a2d4032b4279a2944978a0913ef"
+  integrity sha512-6D82/xSzO094ajanoOSbe4YvXWMfn2A//8Y1+MUqFAJul5Bs+yn36xbK9OtNDcRVSBJ9jjeoXftM6CfztsjOAA==
+  dependencies:
+    "@types/json-schema" "^7.0.6"
+    ajv "^6.12.5"
+    ajv-keywords "^3.5.2"
+
 scss-tokenizer@^0.2.3:
   version "0.2.3"
   resolved "https://registry.yarnpkg.com/scss-tokenizer/-/scss-tokenizer-0.2.3.tgz#8eb06db9a9723333824d3f5530641149847ce5d1"