diff --git a/package-lock.json b/package-lock.json
index f9e3357a7..5501185b3 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -5243,6 +5243,16 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/undici": {
+      "version": "8.9.0",
+      "resolved": "https://registry.npmjs.org/undici/-/undici-8.9.0.tgz",
+      "integrity": "sha512-aWZpUj7XoGonMClx4gdDRfgBjqeA+F473aDmROQQbM9n6PRfK/u1q/a0X4wMTgcHfT8H6fpbt98PFuDUwFg2YA==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=22.19.0"
+      }
+    },
     "node_modules/undici-types": {
       "version": "5.26.5",
       "license": "MIT"
@@ -5583,9 +5593,9 @@
         "ws": "^8"
       },
       "devDependencies": {
-        "@types/sinon": "^22.0.0",
+        "@types/sinon": "^22",
         "@types/ws": "^8",
-        "sinon": "^22.1.0"
+        "sinon": "^22"
       },
       "engines": {
         "node": ">=18",
@@ -5699,7 +5709,7 @@
         "proxyquire": "^2.1.3",
         "sinon": "^22.1.0",
         "tsd": "^0.33.0",
-        "undici": "^7.25.0",
+        "undici": "^8.9.0",
         "ws": "^8"
       },
       "engines": {
@@ -5717,14 +5727,6 @@
         "undici-types": "~7.19.0"
       }
     },
-    "packages/socket-mode/node_modules/undici": {
-      "version": "7.25.0",
-      "dev": true,
-      "license": "MIT",
-      "engines": {
-        "node": ">=20.18.1"
-      }
-    },
     "packages/socket-mode/node_modules/undici-types": {
       "version": "7.19.2",
       "license": "MIT"
diff --git a/packages/socket-mode/package.json b/packages/socket-mode/package.json
index 43222aad7..c285cb77e 100644
--- a/packages/socket-mode/package.json
+++ b/packages/socket-mode/package.json
@@ -66,7 +66,7 @@
     "proxyquire": "^2.1.3",
     "sinon": "^22.1.0",
     "tsd": "^0.33.0",
-    "undici": "^7.25.0",
+    "undici": "^8.9.0",
     "ws": "^8"
   },
   "tsd": {