diff --git a/package.json b/package.json
index c5f2094..0fa3ee4 100644
--- a/package.json
+++ b/package.json
@@ -31,7 +31,7 @@
     "microcms-richedit-processer": "1.1.0",
     "next": "12.1.6",
     "next-head-seo": "0.1.3",
-    "next-sitemap": "3.0.5",
+    "next-sitemap": "3.1.55",
     "react": "18.1.0",
     "react-dom": "18.1.0",
     "react-scroll": "1.8.7",
diff --git a/yarn.lock b/yarn.lock
index 4bf3ffe..3b6c7b3 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -17,10 +17,10 @@
   dependencies:
     regenerator-runtime "^0.13.4"
 
-"@corex/deepmerge@^4.0.14":
-  version "4.0.16"
-  resolved "https://registry.yarnpkg.com/@corex/deepmerge/-/deepmerge-4.0.16.tgz#2fca1db87ebdfd3faa2798cdbde1b02e73b11f4a"
-  integrity sha512-NjPTizUx0ovYv7WiC8Erq/yMGjc4OfSMywbEUkb1QpaBb4tgD9fe2DwRy3hfogrMZ30nWxwOtMg7hwuY67RYnQ==
+"@corex/deepmerge@^4.0.29":
+  version "4.0.43"
+  resolved "https://registry.yarnpkg.com/@corex/deepmerge/-/deepmerge-4.0.43.tgz#9bd42559ebb41cc5a7fb7cfeea5f231c20977dca"
+  integrity sha512-N8uEMrMPL0cu/bdboEWpQYb/0i2K5Qn8eCsxzOmxSggJbbQte7ljMRoXm917AbntqTGOzdTu+vP3KOOzoC70HQ==
 
 "@eslint/eslintrc@^1.3.0":
   version "1.3.0"
@@ -335,15 +335,9 @@ ansi-escapes@^4.3.0:
   resolved "https://registry.yarnpkg.com/ansi-escapes/-/ansi-escapes-4.3.2.tgz#6b2291d1db7d98b6521d5f1efa42d0f3a9feb65e"
   integrity sha512-gKXj5ALrKWQLsYG9jlTRmR/xKluxHV+Z9QEwNIgCfM1/uwPMCuzVVnh5mwTd+OuBZcwSIMbqssNWRm1lE51QaQ==
   dependencies:
-<<<<<<< HEAD
-    type-fest "^0.11.0"
-
-ansi-regex@^5.0.0, ansi-regex@^5.0.1:
-=======
     type-fest "^0.21.3"
 
 ansi-regex@^5.0.1:
->>>>>>> 33771d5 (Headコンポーネント実装)
   version "5.0.1"
   resolved "https://registry.yarnpkg.com/ansi-regex/-/ansi-regex-5.0.1.tgz#082cb2c89c9fe8659a311a53bd6a4dc5301db304"
   integrity sha512-quJQXlTSUGL2LH9SUXo8VwsY4soanhgo6LNSm84E1LBcE8s3O0wpdiRzyR9z/ZZJMlMWv37qOOb9pdJlMUEKFQ==
@@ -1839,6 +1833,11 @@ minimist@^1.2.0, minimist@^1.2.5, minimist@^1.2.6:
   resolved "https://registry.yarnpkg.com/minimist/-/minimist-1.2.6.tgz#8637a5b759ea0d6e98702cfb3a9283323c93af44"
   integrity sha512-Jsjnk4bw3YJqYzbdyBiNsPWHPfO++UGG749Cxs6peCu5Xg4nrena6OVxOYxrQTqww0Jmwt+Ref8rggumkTLz9Q==
 
+minimist@^1.2.7:
+  version "1.2.8"
+  resolved "https://registry.yarnpkg.com/minimist/-/minimist-1.2.8.tgz#c1a464e7693302e082a075cee0c057741ac4772c"
+  integrity sha512-2yyAR8qBkN3YuheJanUpWC5U3bb5osDywNB8RzDVlDwDHbocAJveqqj1u8+SVD7jkWT4yvsHCpWqqWqAxb0zCA==
+
 monocle-ts@^2.3.3:
   version "2.3.13"
   resolved "https://registry.yarnpkg.com/monocle-ts/-/monocle-ts-2.3.13.tgz#7c8af489613cd5175df2ea3c02c57c6151995e5d"
@@ -1893,13 +1892,13 @@ next-head-seo@0.1.3:
   resolved "https://registry.yarnpkg.com/next-head-seo/-/next-head-seo-0.1.3.tgz#d1b47711a3c467d25868d88209e08321edfd52a8"
   integrity sha512-81vhTbe5CIi+fF12m2Zd4zCbw5rY65DRJC4y0GDIcvku7AzeQsHsuHWfROBANhWk1Fv7A33IDTJMn31owgoxkQ==
 
-next-sitemap@3.0.5:
-  version "3.0.5"
-  resolved "https://registry.yarnpkg.com/next-sitemap/-/next-sitemap-3.0.5.tgz#6c031641455356db7fac9d34b42809dd4c43d1b2"
-  integrity sha512-YdiW5wYNruyZCvhGGOMAdTylCQuxQkZKbSFV9Fjuf/U7aAt8lJwc3HG/WvR0n3Q1Y8c1ZiW/24UDZLQPfoKsYg==
+next-sitemap@3.1.55:
+  version "3.1.55"
+  resolved "https://registry.yarnpkg.com/next-sitemap/-/next-sitemap-3.1.55.tgz#9ba3ce6a22d8da641c241ddd644e1e3aef9a13c5"
+  integrity sha512-ZjkRfkqoSLbU+e8W9TWWe0zfOGNA47lpvm35kNcUCmj73gpLX2PIn51gwHT/B6bgGVAFYY0OXixJDrxIIwcEHw==
   dependencies:
-    "@corex/deepmerge" "^4.0.14"
-    minimist "^1.2.6"
+    "@corex/deepmerge" "^4.0.29"
+    minimist "^1.2.7"
 
 next@12.1.6:
   version "12.1.6"