diff --git a/package.json b/package.json
index 62858ee..234c6b1 100644
--- a/package.json
+++ b/package.json
@@ -16,7 +16,7 @@
   "dependencies": {
     "@slack/bolt": "^3.12.2",
     "@types/express": "^4.17.15",
-    "@types/node": "^18.11.18",
+    "@types/node": "^20.8.4",
     "cross-env": "^7.0.3",
     "dotenv": "^16.0.3",
     "express": "^4.18.2",
diff --git a/yarn.lock b/yarn.lock
index 55713b6..e0eba21 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -133,10 +133,12 @@
   resolved "https://registry.yarnpkg.com/@types/mime/-/mime-1.3.2.tgz#93e25bf9ee75fe0fd80b594bc4feb0e862111b5a"
   integrity sha512-YATxVxgRqNH6nHEIsvg6k2Boc1JHI9ZbH5iWFFv/MTkchz3b1ieGDa5T0a9RznNdI0KhVbdbWSN+KWWrQZRxTw==
 
-"@types/node@*", "@types/node@>=12", "@types/node@>=12.0.0", "@types/node@>=8.1.0", "@types/node@^18.11.18":
-  version "18.11.18"
-  resolved "https://registry.yarnpkg.com/@types/node/-/node-18.11.18.tgz#8dfb97f0da23c2293e554c5a50d61ef134d7697f"
-  integrity sha512-DHQpWGjyQKSHj3ebjFI/wRKcqQcdR+MoFBygntYOZytCqNfkd2ZC4ARDJ2DQqhjH5p85Nnd3jhUJIXrszFX/JA==
+"@types/node@*", "@types/node@>=12", "@types/node@>=12.0.0", "@types/node@>=8.1.0", "@types/node@^20.8.4":
+  version "20.8.4"
+  resolved "https://registry.yarnpkg.com/@types/node/-/node-20.8.4.tgz#0e9ebb2ff29d5c3302fc84477d066fa7c6b441aa"
+  integrity sha512-ZVPnqU58giiCjSxjVUESDtdPk4QR5WQhhINbc9UBrKLU68MX5BF6kbQzTrkwbolyr0X8ChBpXfavr5mZFKZQ5A==
+  dependencies:
+    undici-types "~5.25.1"
 
 "@types/node@18.11.8":
   version "18.11.8"
@@ -1485,6 +1487,11 @@ undefsafe@^2.0.5:
   resolved "https://registry.yarnpkg.com/undefsafe/-/undefsafe-2.0.5.tgz#38733b9327bdcd226db889fb723a6efd162e6e2c"
   integrity sha512-WxONCrssBM8TSPRqN5EmsjVrsv4A8X12J4ArBiiayv3DyyG3ZlIg6yysuuSYdZsVz3TKcTg2fd//Ujd4CHV1iA==
 
+undici-types@~5.25.1:
+  version "5.25.3"
+  resolved "https://registry.yarnpkg.com/undici-types/-/undici-types-5.25.3.tgz#e044115914c85f0bcbb229f346ab739f064998c3"
+  integrity sha512-Ga1jfYwRn7+cP9v8auvEXN1rX3sWqlayd4HP7OKk4mZWylEmu3KzXDUGrQUN6Ol7qo1gPvB2e5gX6udnyEPgdA==
+
 unpipe@1.0.0, unpipe@~1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/unpipe/-/unpipe-1.0.0.tgz#b2bf4ee8514aae6165b4817829d21b2ef49904ec"