diff --git a/npm-shrinkwrap.json b/npm-shrinkwrap.json
index 79af4de..c2b6559 100644
--- a/npm-shrinkwrap.json
+++ b/npm-shrinkwrap.json
@@ -21,7 +21,7 @@
 				"lockfile": "^1.0.4",
 				"make-fetch-happen": "^14.0.3",
 				"semver": "^7.7.2",
-				"zod": "^3.25.76"
+				"zod": "^4.1.9"
 			},
 			"bin": {
 				"ui5mcp": "bin/ui5mcp.js"
@@ -2033,6 +2033,16 @@
 			"dev": true,
 			"license": "MIT"
 		},
+		"node_modules/@modelcontextprotocol/inspector-client/node_modules/zod": {
+			"version": "3.25.76",
+			"resolved": "https://registry.npmjs.org/zod/-/zod-3.25.76.tgz",
+			"integrity": "sha512-gzUt/qt81nXsFGKIFcC3YnfEAx5NkunCfnDlvuBSSFS02bcXu4Lmea0AFIUwbLWxWPx3d9p8S5QoaujKcNQxcQ==",
+			"dev": true,
+			"license": "MIT",
+			"funding": {
+				"url": "https://github.com/sponsors/colinhacks"
+			}
+		},
 		"node_modules/@modelcontextprotocol/inspector-server": {
 			"version": "0.16.8",
 			"resolved": "https://registry.npmjs.org/@modelcontextprotocol/inspector-server/-/inspector-server-0.16.8.tgz",
@@ -2052,6 +2062,16 @@
 				"mcp-inspector-server": "build/index.js"
 			}
 		},
+		"node_modules/@modelcontextprotocol/inspector-server/node_modules/zod": {
+			"version": "3.25.76",
+			"resolved": "https://registry.npmjs.org/zod/-/zod-3.25.76.tgz",
+			"integrity": "sha512-gzUt/qt81nXsFGKIFcC3YnfEAx5NkunCfnDlvuBSSFS02bcXu4Lmea0AFIUwbLWxWPx3d9p8S5QoaujKcNQxcQ==",
+			"dev": true,
+			"license": "MIT",
+			"funding": {
+				"url": "https://github.com/sponsors/colinhacks"
+			}
+		},
 		"node_modules/@modelcontextprotocol/inspector/node_modules/node-fetch": {
 			"version": "3.3.2",
 			"resolved": "https://registry.npmjs.org/node-fetch/-/node-fetch-3.3.2.tgz",
@@ -2071,6 +2091,16 @@
 				"url": "https://opencollective.com/node-fetch"
 			}
 		},
+		"node_modules/@modelcontextprotocol/inspector/node_modules/zod": {
+			"version": "3.25.76",
+			"resolved": "https://registry.npmjs.org/zod/-/zod-3.25.76.tgz",
+			"integrity": "sha512-gzUt/qt81nXsFGKIFcC3YnfEAx5NkunCfnDlvuBSSFS02bcXu4Lmea0AFIUwbLWxWPx3d9p8S5QoaujKcNQxcQ==",
+			"dev": true,
+			"license": "MIT",
+			"funding": {
+				"url": "https://github.com/sponsors/colinhacks"
+			}
+		},
 		"node_modules/@modelcontextprotocol/sdk": {
 			"version": "1.18.1",
 			"resolved": "https://registry.npmjs.org/@modelcontextprotocol/sdk/-/sdk-1.18.1.tgz",
@@ -2125,6 +2155,24 @@
 				"node": ">=16.20.0"
 			}
 		},
+		"node_modules/@modelcontextprotocol/sdk/node_modules/zod": {
+			"version": "3.25.76",
+			"resolved": "https://registry.npmjs.org/zod/-/zod-3.25.76.tgz",
+			"integrity": "sha512-gzUt/qt81nXsFGKIFcC3YnfEAx5NkunCfnDlvuBSSFS02bcXu4Lmea0AFIUwbLWxWPx3d9p8S5QoaujKcNQxcQ==",
+			"license": "MIT",
+			"funding": {
+				"url": "https://github.com/sponsors/colinhacks"
+			}
+		},
+		"node_modules/@modelcontextprotocol/sdk/node_modules/zod-to-json-schema": {
+			"version": "3.24.6",
+			"resolved": "https://registry.npmjs.org/zod-to-json-schema/-/zod-to-json-schema-3.24.6.tgz",
+			"integrity": "sha512-h/z3PKvcTcTetyjl1fkj79MHNEjm+HpD6NXheWjzOekY7kV+lwDYnHw+ivHkijnCSMz1yJaWBD9vu/Fcmk+vEg==",
+			"license": "ISC",
+			"peerDependencies": {
+				"zod": "^3.24.1"
+			}
+		},
 		"node_modules/@napi-rs/wasm-runtime": {
 			"version": "0.2.12",
 			"resolved": "https://registry.npmjs.org/@napi-rs/wasm-runtime/-/wasm-runtime-0.2.12.tgz",
@@ -19664,22 +19712,13 @@
 			}
 		},
 		"node_modules/zod": {
-			"version": "3.25.76",
-			"resolved": "https://registry.npmjs.org/zod/-/zod-3.25.76.tgz",
-			"integrity": "sha512-gzUt/qt81nXsFGKIFcC3YnfEAx5NkunCfnDlvuBSSFS02bcXu4Lmea0AFIUwbLWxWPx3d9p8S5QoaujKcNQxcQ==",
+			"version": "4.1.9",
+			"resolved": "https://registry.npmjs.org/zod/-/zod-4.1.9.tgz",
+			"integrity": "sha512-HI32jTq0AUAC125z30E8bQNz0RQ+9Uc+4J7V97gLYjZVKRjeydPgGt6dvQzFrav7MYOUGFqqOGiHpA/fdbd0cQ==",
 			"license": "MIT",
 			"funding": {
 				"url": "https://github.com/sponsors/colinhacks"
 			}
-		},
-		"node_modules/zod-to-json-schema": {
-			"version": "3.24.6",
-			"resolved": "https://registry.npmjs.org/zod-to-json-schema/-/zod-to-json-schema-3.24.6.tgz",
-			"integrity": "sha512-h/z3PKvcTcTetyjl1fkj79MHNEjm+HpD6NXheWjzOekY7kV+lwDYnHw+ivHkijnCSMz1yJaWBD9vu/Fcmk+vEg==",
-			"license": "ISC",
-			"peerDependencies": {
-				"zod": "^3.24.1"
-			}
 		}
 	}
 }
diff --git a/package.json b/package.json
index fe152e5..db15e6a 100644
--- a/package.json
+++ b/package.json
@@ -86,7 +86,7 @@
 		"lockfile": "^1.0.4",
 		"make-fetch-happen": "^14.0.3",
 		"semver": "^7.7.2",
-		"zod": "^3.25.76"
+		"zod": "^4.1.9"
 	},
 	"devDependencies": {
 		"@commitlint/cli": "^19.8.1",