diff --git a/package-lock.json b/package-lock.json
index 80b730a64..9b56f6174 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -10398,9 +10398,9 @@
       }
     },
     "node_modules/undici": {
-      "version": "5.28.3",
-      "resolved": "https://registry.npmjs.org/undici/-/undici-5.28.3.tgz",
-      "integrity": "sha512-3ItfzbrhDlINjaP0duwnNsKpDQk3acHI3gVJ1z4fmwMK31k5G9OVIAMLSIaP6w4FaGkaAkN6zaQO9LUvZ1t7VA==",
+      "version": "5.28.4",
+      "resolved": "https://registry.npmjs.org/undici/-/undici-5.28.4.tgz",
+      "integrity": "sha512-72RFADWFqKmUb2hmmvNODKL3p9hcB6Gt2DOQMis1SEBaV6a4MH8soBvzg+95CYhCKPFedut2JY9bMfrDl9D23g==",
       "dependencies": {
         "@fastify/busboy": "^2.0.0"
       },
@@ -11384,7 +11384,7 @@
         "@bufbuild/protoc-gen-es": "^1.8.0",
         "@types/jasmine": "^5.0.0",
         "jasmine": "^5.1.0",
-        "undici": "^5.28.3"
+        "undici": "^5.28.4"
       },
       "peerDependencies": {
         "@bufbuild/protobuf": "^1.4.2"
@@ -11401,7 +11401,7 @@
         "fflate": "^0.8.1",
         "node-forge": "^1.3.1",
         "tar-stream": "^3.1.7",
-        "undici": "^5.28.3",
+        "undici": "^5.28.4",
         "webdriverio": "^8.35.1"
       },
       "bin": {
@@ -11867,7 +11867,7 @@
       "version": "1.4.0",
       "license": "Apache-2.0",
       "dependencies": {
-        "undici": "^5.28.3"
+        "undici": "^5.28.4"
       },
       "devDependencies": {
         "@types/jasmine": "^5.0.0",
@@ -11948,7 +11948,7 @@
         "@connectrpc/protoc-gen-connect-es": "^1.4.0",
         "@types/express": "^4.17.18",
         "esbuild": "^0.19.8",
-        "typescript": "5.4.3"
+        "typescript": "^5.4.3"
       },
       "engines": {
         "node": ">=16"
diff --git a/packages/connect-conformance/package.json b/packages/connect-conformance/package.json
index f128f2f5e..a6a443c66 100644
--- a/packages/connect-conformance/package.json
+++ b/packages/connect-conformance/package.json
@@ -27,7 +27,7 @@
     "asn1js": "^3.0.5",
     "fflate": "^0.8.1",
     "tar-stream": "^3.1.7",
-    "undici": "^5.28.3",
+    "undici": "^5.28.4",
     "webdriverio": "^8.35.1",
     "esbuild": "^0.20.0"
   },
diff --git a/packages/connect-node/package.json b/packages/connect-node/package.json
index 610742c1e..3e7ffb02f 100644
--- a/packages/connect-node/package.json
+++ b/packages/connect-node/package.json
@@ -27,7 +27,7 @@
     "node": ">=16.0.0"
   },
   "dependencies": {
-    "undici": "^5.28.3"
+    "undici": "^5.28.4"
   },
   "peerDependencies": {
     "@bufbuild/protobuf": "^1.4.2",
diff --git a/packages/connect/package.json b/packages/connect/package.json
index a8a6dd645..3b1e82b8e 100644
--- a/packages/connect/package.json
+++ b/packages/connect/package.json
@@ -65,6 +65,6 @@
     "@bufbuild/protoc-gen-es": "^1.8.0",
     "@types/jasmine": "^5.0.0",
     "jasmine": "^5.1.0",
-    "undici": "^5.28.3"
+    "undici": "^5.28.4"
   }
 }