diff --git a/package.json b/package.json
index 0c5a9ac..ae5c658 100644
--- a/package.json
+++ b/package.json
@@ -13,7 +13,7 @@
     "normalize.css": "^8.0.1",
     "noto-sans-jp": "^24.0.0",
     "postcss-modules": "^1.5.0",
-    "qs": "^6.9.3",
+    "qs": "^6.9.7",
     "react": ">=16.3.0",
     "react-dom": "^16.11.0",
     "react-router5": "^8.0.1",
diff --git a/yarn.lock b/yarn.lock
index fa3d136..2ed8100 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -4737,10 +4737,10 @@ q@^1.1.2:
   resolved "https://registry.yarnpkg.com/q/-/q-1.5.1.tgz#7e32f75b41381291d04611f1bf14109ac00651d7"
   integrity sha1-fjL3W0E4EpHQRhHxvxQQmsAGUdc=
 
-qs@^6.9.3:
-  version "6.9.3"
-  resolved "https://registry.yarnpkg.com/qs/-/qs-6.9.3.tgz#bfadcd296c2d549f1dffa560619132c977f5008e"
-  integrity sha512-EbZYNarm6138UKKq46tdx08Yo/q9ZhFoAXAI1meAFd2GtbRDhbZY2WQSICskT0c5q99aFzLG1D4nvTk9tqfXIw==
+qs@^6.9.7:
+  version "6.9.7"
+  resolved "https://registry.yarnpkg.com/qs/-/qs-6.9.7.tgz#4610846871485e1e048f44ae3b94033f0e675afe"
+  integrity sha512-IhMFgUmuNpyRfxA90umL7ByLlgRXu6tIfKPpF5TmcfRLlLCckfP/g3IQmju6jjpu+Hh8rA+2p6A27ZSPOOHdKw==
 
 qs@~6.5.2:
   version "6.5.2"