diff --git a/mcp-client-typescript/package-lock.json b/mcp-client-typescript/package-lock.json
index 245fc296..702dbf30 100644
--- a/mcp-client-typescript/package-lock.json
+++ b/mcp-client-typescript/package-lock.json
@@ -9,9 +9,9 @@
       "version": "1.0.0",
       "license": "ISC",
       "dependencies": {
-        "@anthropic-ai/sdk": "^0.127.0",
-        "@modelcontextprotocol/client": "^2.0.0",
-        "dotenv": "^18.0.1"
+        "@anthropic-ai/sdk": "^0.128.0",
+        "@modelcontextprotocol/client": "^2.1.0",
+        "dotenv": "^18.0.4"
       },
       "devDependencies": {
         "@types/node": "^24.13.4",
@@ -22,9 +22,9 @@
       }
     },
     "node_modules/@anthropic-ai/sdk": {
-      "version": "0.127.0",
-      "resolved": "https://registry.npmjs.org/@anthropic-ai/sdk/-/sdk-0.127.0.tgz",
-      "integrity": "sha512-OKiVbG9LHCxjn4fBJZJFy/Bz3hqE1RYpwaeSEDNheQnvz0XNKmGT/Lhkz2Sf1a27Ldt3vVv+BkU81I0U/8EpoQ==",
+      "version": "0.128.0",
+      "resolved": "https://registry.npmjs.org/@anthropic-ai/sdk/-/sdk-0.128.0.tgz",
+      "integrity": "sha512-tl5cBFZC1jVFrTuQyvQObA4WmuNgcYVeXfriqOumgtLAHUm4gPUj18YnszBW60v0PrjDB8nBDOC6wd9CmHQFlA==",
       "license": "MIT",
       "dependencies": {
         "json-schema-to-ts": "^3.1.1",
@@ -52,12 +52,12 @@
       }
     },
     "node_modules/@modelcontextprotocol/client": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/@modelcontextprotocol/client/-/client-2.0.0.tgz",
-      "integrity": "sha512-8f1OghQ2rjzIOfqgUCP+8GiUWqRs89njoWLNqAe8kWmDePv3s1fZXseej+QXemssEuuOvLLmLO/kqM3IQHtISw==",
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/@modelcontextprotocol/client/-/client-2.1.0.tgz",
+      "integrity": "sha512-mDVhoy5WjDb0U+4dQPzLcciC2erSex/GRVQqnoZdiuMoE3YiTZdiS7ezNcFwX4XEOWOaj7jZr0kLYnILnL8orA==",
       "license": "MIT",
       "dependencies": {
-        "@modelcontextprotocol/core": "2.0.0",
+        "@modelcontextprotocol/core": "2.1.0",
         "cross-spawn": "^7.0.5",
         "eventsource": "^3.0.2",
         "eventsource-parser": "^3.0.0",
@@ -70,9 +70,9 @@
       }
     },
     "node_modules/@modelcontextprotocol/core": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/@modelcontextprotocol/core/-/core-2.0.0.tgz",
-      "integrity": "sha512-pJCEwGG7Lfr/+PQp9ZTwKXNeO5wzbfKL7H3MYpCorM4oFBoQrdjnBgEoqG+RjhsvS1FKrDbKux+M1HhlnGWqcA==",
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/@modelcontextprotocol/core/-/core-2.1.0.tgz",
+      "integrity": "sha512-YdFj5gMRHr0gYNAhTbQDgjLHiEJdIAUYxomhKseUNye7ZGlISQmUoLh2sveFFCiQ7j2YMffT1kgSND0FSfIFjQ==",
       "license": "MIT",
       "dependencies": {
         "zod": "^4.2.0"
@@ -452,9 +452,9 @@
       }
     },
     "node_modules/dotenv": {
-      "version": "18.0.1",
-      "resolved": "https://registry.npmjs.org/dotenv/-/dotenv-18.0.1.tgz",
-      "integrity": "sha512-0eR4m4D/jH5eaI3evo2ZqqMii5mrTCR12v12VChdie6O1gPHs7XAjzTep0CWc1Bd+oNx3vVfbi734dK4zghigw==",
+      "version": "18.0.4",
+      "resolved": "https://registry.npmjs.org/dotenv/-/dotenv-18.0.4.tgz",
+      "integrity": "sha512-jGt9uI5BIxpVO15kvy+iEFqNAwxYClKWnkptLjSNPnFLC003Imd0ofr3aEVsbpHdSBdSsbcApNIlz4nbyGMwdA==",
       "license": "BSD-2-Clause",
       "bin": {
         "dotenv": "dist/index.cjs"
diff --git a/mcp-client-typescript/package.json b/mcp-client-typescript/package.json
index 8560c3c0..ea546edb 100644
--- a/mcp-client-typescript/package.json
+++ b/mcp-client-typescript/package.json
@@ -11,9 +11,9 @@
   "license": "ISC",
   "type": "module",
   "dependencies": {
-    "@anthropic-ai/sdk": "^0.127.0",
-    "@modelcontextprotocol/client": "^2.0.0",
-    "dotenv": "^18.0.1"
+    "@anthropic-ai/sdk": "^0.128.0",
+    "@modelcontextprotocol/client": "^2.1.0",
+    "dotenv": "^18.0.4"
   },
   "devDependencies": {
     "@types/node": "^24.13.4",
diff --git a/tests/helpers/package-lock.json b/tests/helpers/package-lock.json
index 719cb5f1..ffa698fb 100644
--- a/tests/helpers/package-lock.json
+++ b/tests/helpers/package-lock.json
@@ -8,8 +8,8 @@
       "name": "mcp-test-helpers",
       "version": "1.0.0",
       "dependencies": {
-        "@modelcontextprotocol/client": "^2.0.0",
-        "@modelcontextprotocol/server": "^2.0.0",
+        "@modelcontextprotocol/client": "^2.1.0",
+        "@modelcontextprotocol/server": "^2.1.0",
         "zod": "^4.6.5"
       },
       "devDependencies": {
@@ -21,12 +21,12 @@
       }
     },
     "node_modules/@modelcontextprotocol/client": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/@modelcontextprotocol/client/-/client-2.0.0.tgz",
-      "integrity": "sha512-8f1OghQ2rjzIOfqgUCP+8GiUWqRs89njoWLNqAe8kWmDePv3s1fZXseej+QXemssEuuOvLLmLO/kqM3IQHtISw==",
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/@modelcontextprotocol/client/-/client-2.1.0.tgz",
+      "integrity": "sha512-mDVhoy5WjDb0U+4dQPzLcciC2erSex/GRVQqnoZdiuMoE3YiTZdiS7ezNcFwX4XEOWOaj7jZr0kLYnILnL8orA==",
       "license": "MIT",
       "dependencies": {
-        "@modelcontextprotocol/core": "2.0.0",
+        "@modelcontextprotocol/core": "2.1.0",
         "cross-spawn": "^7.0.5",
         "eventsource": "^3.0.2",
         "eventsource-parser": "^3.0.0",
@@ -39,9 +39,9 @@
       }
     },
     "node_modules/@modelcontextprotocol/core": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/@modelcontextprotocol/core/-/core-2.0.0.tgz",
-      "integrity": "sha512-pJCEwGG7Lfr/+PQp9ZTwKXNeO5wzbfKL7H3MYpCorM4oFBoQrdjnBgEoqG+RjhsvS1FKrDbKux+M1HhlnGWqcA==",
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/@modelcontextprotocol/core/-/core-2.1.0.tgz",
+      "integrity": "sha512-YdFj5gMRHr0gYNAhTbQDgjLHiEJdIAUYxomhKseUNye7ZGlISQmUoLh2sveFFCiQ7j2YMffT1kgSND0FSfIFjQ==",
       "license": "MIT",
       "dependencies": {
         "zod": "^4.2.0"
@@ -51,12 +51,12 @@
       }
     },
     "node_modules/@modelcontextprotocol/server": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/@modelcontextprotocol/server/-/server-2.0.0.tgz",
-      "integrity": "sha512-YhHWdHfpFMQfd0prsEnxKeS3Qz3ytIGmsS0sth4KDjnacIT7hxk6hXHkJ9KysxlkvTM+WZAtQbbcUhdoP4Hvtw==",
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/@modelcontextprotocol/server/-/server-2.1.0.tgz",
+      "integrity": "sha512-FdvwZU5N03O77Suh35JqjAqq5R1ZTEPFtwu6N4BgBq28qrQtrCnpbLL5U2pwYCuE194jAw0xnlOVmIqhfoYuUQ==",
       "license": "MIT",
       "dependencies": {
-        "@modelcontextprotocol/core": "2.0.0",
+        "@modelcontextprotocol/core": "2.1.0",
         "zod": "^4.2.0"
       },
       "engines": {
diff --git a/tests/helpers/package.json b/tests/helpers/package.json
index c349e32b..0636ac6c 100644
--- a/tests/helpers/package.json
+++ b/tests/helpers/package.json
@@ -15,8 +15,8 @@
     "node": ">=20.0.0"
   },
   "dependencies": {
-    "@modelcontextprotocol/client": "^2.0.0",
-    "@modelcontextprotocol/server": "^2.0.0",
+    "@modelcontextprotocol/client": "^2.1.0",
+    "@modelcontextprotocol/server": "^2.1.0",
     "zod": "^4.6.5"
   }
 }
diff --git a/weather-server-typescript/package-lock.json b/weather-server-typescript/package-lock.json
index faa78cee..59c0d28c 100644
--- a/weather-server-typescript/package-lock.json
+++ b/weather-server-typescript/package-lock.json
@@ -24,9 +24,9 @@
       }
     },
     "node_modules/@modelcontextprotocol/core": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/@modelcontextprotocol/core/-/core-2.0.0.tgz",
-      "integrity": "sha512-pJCEwGG7Lfr/+PQp9ZTwKXNeO5wzbfKL7H3MYpCorM4oFBoQrdjnBgEoqG+RjhsvS1FKrDbKux+M1HhlnGWqcA==",
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/@modelcontextprotocol/core/-/core-2.1.0.tgz",
+      "integrity": "sha512-YdFj5gMRHr0gYNAhTbQDgjLHiEJdIAUYxomhKseUNye7ZGlISQmUoLh2sveFFCiQ7j2YMffT1kgSND0FSfIFjQ==",
       "license": "MIT",
       "dependencies": {
         "zod": "^4.2.0"
@@ -36,12 +36,12 @@
       }
     },
     "node_modules/@modelcontextprotocol/server": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/@modelcontextprotocol/server/-/server-2.0.0.tgz",
-      "integrity": "sha512-YhHWdHfpFMQfd0prsEnxKeS3Qz3ytIGmsS0sth4KDjnacIT7hxk6hXHkJ9KysxlkvTM+WZAtQbbcUhdoP4Hvtw==",
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/@modelcontextprotocol/server/-/server-2.1.0.tgz",
+      "integrity": "sha512-FdvwZU5N03O77Suh35JqjAqq5R1ZTEPFtwu6N4BgBq28qrQtrCnpbLL5U2pwYCuE194jAw0xnlOVmIqhfoYuUQ==",
       "license": "MIT",
       "dependencies": {
-        "@modelcontextprotocol/core": "2.0.0",
+        "@modelcontextprotocol/core": "2.1.0",
         "zod": "^4.2.0"
       },
       "engines": {