diff --git a/package-lock.json b/package-lock.json
index f0d0037..d5d656c 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1867,7 +1867,7 @@
         "@miniflare/core": "2.14.1",
         "@miniflare/shared": "2.14.1",
         "http-cache-semantics": "^4.1.0",
-        "undici": "5.26.5"
+        "undici": "5.20.0"
       },
       "engines": {
         "node": ">=16.13"
@@ -1887,7 +1887,7 @@
         "dotenv": "^10.0.0",
         "kleur": "^4.1.4",
         "set-cookie-parser": "^2.4.8",
-        "undici": "5.26.5",
+        "undici": "5.20.0",
         "urlpattern-polyfill": "^4.0.3"
       },
       "engines": {
@@ -1925,7 +1925,7 @@
         "@miniflare/core": "2.14.1",
         "@miniflare/shared": "2.14.1",
         "@miniflare/storage-memory": "2.14.1",
-        "undici": "5.26.5"
+        "undici": "5.20.0"
       },
       "engines": {
         "node": ">=16.13"
@@ -1940,7 +1940,7 @@
         "@miniflare/core": "2.14.1",
         "@miniflare/shared": "2.14.1",
         "html-rewriter-wasm": "^0.4.1",
-        "undici": "5.26.5"
+        "undici": "5.20.0"
       },
       "engines": {
         "node": ">=16.13"
@@ -1978,7 +1978,7 @@
       "dependencies": {
         "@miniflare/core": "2.14.1",
         "@miniflare/shared": "2.14.1",
-        "undici": "5.26.5"
+        "undici": "5.20.0"
       },
       "engines": {
         "node": ">=16.13"
@@ -2094,7 +2094,7 @@
       "dependencies": {
         "@miniflare/core": "2.14.1",
         "@miniflare/shared": "2.14.1",
-        "undici": "5.26.5",
+        "undici": "5.20.0",
         "ws": "^8.2.2"
       },
       "engines": {
@@ -7377,7 +7377,9 @@
       }
     },
     "node_modules/undici": {
-      "version": "5.26.5",
+      "version": "5.20.0",
+      "resolved": "https://registry.npmjs.org/undici/-/undici-5.20.0.tgz",
+      "integrity": "sha512-J3j60dYzuo6Eevbawwp1sdg16k5Tf768bxYK4TUJRH7cBM4kFCbf3mOnM/0E3vQYXvpxITbbWmBafaDbxLDz3g==",
       "dev": true,
       "dependencies": {
         "busboy": "^1.6.0"