diff --git a/package-lock.json b/package-lock.json
index e193fca2f..580dc8200 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -89,7 +89,7 @@
         "stylelint-prettier": "^3.0.0",
         "swc_mut_cjs_exports": "^0.99.0",
         "to-mock": "1.6.2",
-        "typescript": "^5.0.3",
+        "typescript": "5.1",
         "verdaccio": "^5.23.2",
         "webpack": "^5.74.0",
         "webpack-cli": "^5.0.1",
@@ -30650,6 +30650,7 @@
       "version": "5.1.6",
       "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.1.6.tgz",
       "integrity": "sha512-zaWCozRZ6DLEWAWFrVDz1H6FVXzUSfTy5FUMWsQlU8Ym5JP9eO4xkTIROFCQvhQf61z6O/G6ugw3SgAnvvm+HA==",
+      "license": "Apache-2.0",
       "bin": {
         "tsc": "bin/tsc",
         "tsserver": "bin/tsserver"
diff --git a/package.json b/package.json
index 0b7e16e7e..6e7065546 100644
--- a/package.json
+++ b/package.json
@@ -118,7 +118,7 @@
     "stylelint-prettier": "^3.0.0",
     "swc_mut_cjs_exports": "^0.99.0",
     "to-mock": "1.6.2",
-    "typescript": "^5.0.3",
+    "typescript": "5.1",
     "verdaccio": "^5.23.2",
     "webpack": "^5.74.0",
     "webpack-cli": "^5.0.1",
diff --git a/packages/core/src/http/HttpAgentImpl.ts b/packages/core/src/http/HttpAgentImpl.ts
index 5b6184207..03a3ec16a 100644
--- a/packages/core/src/http/HttpAgentImpl.ts
+++ b/packages/core/src/http/HttpAgentImpl.ts
@@ -500,6 +500,7 @@ export class HttpAgentImpl extends HttpAgent {
    */
   _setCookiesFromResponse<B>(agentResponse: HttpAgentResponse<B>): void {
     if (agentResponse.headersRaw) {
+      // @ts-expect-error this type is not part of older typescript distributions (needs TS update)
       const receivedCookies = agentResponse.headersRaw.getSetCookie();
 
       if (receivedCookies.length > 0) {