diff --git a/package.json b/package.json
index 91ce379d..9ff21f3a 100644
--- a/package.json
+++ b/package.json
@@ -81,7 +81,7 @@
     "babel-plugin-istanbul": "5.2.0",
     "chai": "4.2.0",
     "copy-webpack-plugin": "5.1.1",
-    "css-loader": "3.3.2",
+    "css-loader": "3.4.0",
     "cssnano": "4.1.10",
     "dayjs": "1.8.17",
     "emoji-regex": "8.0.0",
diff --git a/yarn.lock b/yarn.lock
index e7e0896c..ff93bb49 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2445,10 +2445,10 @@ css-has-pseudo@^0.10.0:
     postcss "^7.0.6"
     postcss-selector-parser "^5.0.0-rc.4"
 
-css-loader@3.3.2:
-  version "3.3.2"
-  resolved "https://registry.yarnpkg.com/css-loader/-/css-loader-3.3.2.tgz#41b2086528aa4fbf8c0692e874bc14f081129b21"
-  integrity sha512-4XSiURS+YEK2fQhmSaM1onnUm0VKWNf6WWBYjkp9YbSDGCBTVZ5XOM6Gkxo8tLgQlzkZOBJvk9trHlDk4gjEYg==
+css-loader@3.4.0:
+  version "3.4.0"
+  resolved "https://registry.yarnpkg.com/css-loader/-/css-loader-3.4.0.tgz#9fb263436783117a41d014e45e8eaeba54dd6670"
+  integrity sha512-JornYo4RAXl1Mzt0lOSVPmArzAMV3rGY2VuwtaDc732WTWjdwTaeS19nCGWMcSCf305Q396lhhDAJEWWM0SgPQ==
   dependencies:
     camelcase "^5.3.1"
     cssesc "^3.0.0"