diff --git a/python/packages/devui/frontend/package-lock.json b/python/packages/devui/frontend/package-lock.json
index 6264b2c7a1d..b4731bc5eaa 100644
--- a/python/packages/devui/frontend/package-lock.json
+++ b/python/packages/devui/frontend/package-lock.json
@@ -24,7 +24,7 @@
         "clsx": "^2.1.1",
         "lucide-react": "^0.540.0",
         "next-themes": "^0.4.6",
-        "react": "^19.1.1",
+        "react": "^19.3.0",
         "react-dom": "^19.1.1",
         "tailwind-merge": "^3.7.0",
         "tailwindcss": "^4.3.3",
@@ -33,7 +33,7 @@
       "devDependencies": {
         "@eslint/js": "^10.0.1",
         "@types/node": "^26.6.4",
-        "@types/react": "^19.1.10",
+        "@types/react": "^19.3.0",
         "@types/react-dom": "^19.1.7",
         "@vitejs/plugin-react": "^5.2.0",
         "eslint": "^10.0.0",
@@ -3519,13 +3519,13 @@
       }
     },
     "node_modules/@types/react": {
-      "version": "19.1.10",
-      "resolved": "https://registry.npmjs.org/@types/react/-/react-19.1.10.tgz",
-      "integrity": "sha512-EhBeSYX0Y6ye8pNebpKrwFJq7BoQ8J5SO6NlvNwwHjSj6adXJViPQrKlsyPw7hLBLvckEMO1yxeGdR82YBBlDg==",
+      "version": "19.3.0",
+      "resolved": "https://registry.npmjs.org/@types/react/-/react-19.3.0.tgz",
+      "integrity": "sha512-N0rFCuH9YoxG9/m61l9MfpJKfmLOVU0em7ipIz6TRgSSkvReLB9vL85GB+yr8Bs5leqpvg96JSwF4ZS1s4viQg==",
       "devOptional": true,
       "license": "MIT",
       "dependencies": {
-        "csstype": "^3.0.2"
+        "csstype": "^3.2.2"
       }
     },
     "node_modules/@types/react-dom": {
@@ -4079,9 +4079,9 @@
       }
     },
     "node_modules/csstype": {
-      "version": "3.1.3",
-      "resolved": "https://registry.npmjs.org/csstype/-/csstype-3.1.3.tgz",
-      "integrity": "sha512-M1uQkMl8rQK/szD0LNhtqxIPLpimGm8sOBwU7lLnCpSbTyY3yeU1Vc7l4KT5zT4s/yOxHH5O7tIuuLOCnLADRw==",
+      "version": "3.2.3",
+      "resolved": "https://registry.npmjs.org/csstype/-/csstype-3.2.3.tgz",
+      "integrity": "sha512-z1HGKcYy2xA8AGQfwrn0PAy+PB7X/GSj3UVJW9qKyn43xWa+gl5nXmU4qqLMRzWVLFC8KusUX8T/0kCiOYpAIQ==",
       "devOptional": true,
       "license": "MIT"
     },
@@ -5292,9 +5292,9 @@
       "license": "MIT"
     },
     "node_modules/react": {
-      "version": "19.1.1",
-      "resolved": "https://registry.npmjs.org/react/-/react-19.1.1.tgz",
-      "integrity": "sha512-w8nqGImo45dmMIfljjMwOGtbmC/mk4CMYhWIicdSflH91J9TyCyczcPFXJzrZ/ZXcgGRFeP6BU0BEJTw6tZdfQ==",
+      "version": "19.3.0",
+      "resolved": "https://registry.npmjs.org/react/-/react-19.3.0.tgz",
+      "integrity": "sha512-E8LUcbtBWt20bbl2YoHfx4ZDBdxVTfOKtCZn9cDSJ4l6/nuoApcpIBcj47t2wZoVX8g2ZHuMHbiShgCR1T5Sog==",
       "license": "MIT",
       "engines": {
         "node": ">=0.10.0"
diff --git a/python/packages/devui/frontend/package.json b/python/packages/devui/frontend/package.json
index 87cb6159d34..437a22b1fdc 100644
--- a/python/packages/devui/frontend/package.json
+++ b/python/packages/devui/frontend/package.json
@@ -27,7 +27,7 @@
     "clsx": "^2.1.1",
     "lucide-react": "^0.540.0",
     "next-themes": "^0.4.6",
-    "react": "^19.1.1",
+    "react": "^19.3.0",
     "react-dom": "^19.1.1",
     "tailwind-merge": "^3.7.0",
     "tailwindcss": "^4.3.3",
@@ -36,7 +36,7 @@
   "devDependencies": {
     "@eslint/js": "^10.0.1",
     "@types/node": "^26.6.4",
-    "@types/react": "^19.1.10",
+    "@types/react": "^19.3.0",
     "@types/react-dom": "^19.1.7",
     "@vitejs/plugin-react": "^5.2.0",
     "eslint": "^10.0.0",
diff --git a/python/packages/devui/frontend/yarn.lock b/python/packages/devui/frontend/yarn.lock
index 2c6be9929b5..e5bc062e2b6 100644
--- a/python/packages/devui/frontend/yarn.lock
+++ b/python/packages/devui/frontend/yarn.lock
@@ -1177,12 +1177,12 @@
   resolved "https://registry.npmjs.org/@types/react-dom/-/react-dom-19.1.7.tgz"
   integrity sha512-i5ZzwYpqjmrKenzkoLM2Ibzt6mAsM7pxB6BCIouEVVmgiqaMj1TjaK7hnA36hbW5aZv20kx7Lw6hWzPWg0Rurw==
 
-"@types/react@^19.1.10":
-  version "19.1.10"
-  resolved "https://registry.npmjs.org/@types/react/-/react-19.1.10.tgz"
-  integrity sha512-EhBeSYX0Y6ye8pNebpKrwFJq7BoQ8J5SO6NlvNwwHjSj6adXJViPQrKlsyPw7hLBLvckEMO1yxeGdR82YBBlDg==
+"@types/react@^19.3.0":
+  version "19.3.0"
+  resolved "https://registry.yarnpkg.com/@types/react/-/react-19.3.0.tgz#3b3ce8d8c1627fb5ccd4dadd57ef445c5a153b77"
+  integrity sha512-N0rFCuH9YoxG9/m61l9MfpJKfmLOVU0em7ipIz6TRgSSkvReLB9vL85GB+yr8Bs5leqpvg96JSwF4ZS1s4viQg==
   dependencies:
-    csstype "^3.0.2"
+    csstype "^3.2.2"
 
 "@typescript-eslint/eslint-plugin@8.71.1":
   version "8.71.1"
@@ -1418,10 +1418,10 @@ cross-spawn@^7.0.6:
     shebang-command "^2.0.0"
     which "^2.0.1"
 
-csstype@^3.0.2:
-  version "3.1.3"
-  resolved "https://registry.npmjs.org/csstype/-/csstype-3.1.3.tgz"
-  integrity sha512-M1uQkMl8rQK/szD0LNhtqxIPLpimGm8sOBwU7lLnCpSbTyY3yeU1Vc7l4KT5zT4s/yOxHH5O7tIuuLOCnLADRw==
+csstype@^3.2.2:
+  version "3.2.3"
+  resolved "https://registry.yarnpkg.com/csstype/-/csstype-3.2.3.tgz#ec48c0f3e993e50648c86da559e2610995cf989a"
+  integrity sha512-z1HGKcYy2xA8AGQfwrn0PAy+PB7X/GSj3UVJW9qKyn43xWa+gl5nXmU4qqLMRzWVLFC8KusUX8T/0kCiOYpAIQ==
 
 "d3-color@1 - 3":
   version "3.1.0"
@@ -2139,10 +2139,10 @@ react-style-singleton@^2.2.2, react-style-singleton@^2.2.3:
     get-nonce "^1.0.0"
     tslib "^2.0.0"
 
-react@^19.1.1:
-  version "19.1.1"
-  resolved "https://registry.npmjs.org/react/-/react-19.1.1.tgz"
-  integrity sha512-w8nqGImo45dmMIfljjMwOGtbmC/mk4CMYhWIicdSflH91J9TyCyczcPFXJzrZ/ZXcgGRFeP6BU0BEJTw6tZdfQ==
+react@^19.3.0:
+  version "19.3.0"
+  resolved "https://registry.yarnpkg.com/react/-/react-19.3.0.tgz#e20aa3a14687075ce863351b5878b0608c3fbfb2"
+  integrity sha512-E8LUcbtBWt20bbl2YoHfx4ZDBdxVTfOKtCZn9cDSJ4l6/nuoApcpIBcj47t2wZoVX8g2ZHuMHbiShgCR1T5Sog==
 
 rolldown@~1.2.11:
   version "1.2.13"
diff --git a/python/samples/05-end-to-end/ag_ui_single_agent/frontend/package-lock.json b/python/samples/05-end-to-end/ag_ui_single_agent/frontend/package-lock.json
index 6b4051a9c24..f2dd147d3af 100644
--- a/python/samples/05-end-to-end/ag_ui_single_agent/frontend/package-lock.json
+++ b/python/samples/05-end-to-end/ag_ui_single_agent/frontend/package-lock.json
@@ -8,12 +8,12 @@
       "name": "ag-ui-single-agent-demo-frontend",
       "version": "0.1.0",
       "dependencies": {
-        "react": "^18.3.1",
+        "react": "^19.3.0",
         "react-dom": "^18.3.1"
       },
       "devDependencies": {
         "@types/node": "^26.6.4",
-        "@types/react": "^18.3.3",
+        "@types/react": "^19.3.0",
         "@types/react-dom": "^18.3.0",
         "@vitejs/plugin-react": "^6.0.2",
         "typescript": "^7.0.2",
@@ -320,21 +320,13 @@
         "undici-types": "~8.9.0"
       }
     },
-    "node_modules/@types/prop-types": {
-      "version": "15.7.15",
-      "resolved": "https://registry.npmjs.org/@types/prop-types/-/prop-types-15.7.15.tgz",
-      "integrity": "sha1-5uWobWAr6spxzlFj+t9fldcJMcc=",
-      "dev": true,
-      "license": "MIT"
-    },
     "node_modules/@types/react": {
-      "version": "18.3.31",
-      "resolved": "https://registry.npmjs.org/@types/react/-/react-18.3.31.tgz",
-      "integrity": "sha1-teleKP/M6rjZgvM/LrB24XZTwqQ=",
+      "version": "19.3.0",
+      "resolved": "https://registry.npmjs.org/@types/react/-/react-19.3.0.tgz",
+      "integrity": "sha512-N0rFCuH9YoxG9/m61l9MfpJKfmLOVU0em7ipIz6TRgSSkvReLB9vL85GB+yr8Bs5leqpvg96JSwF4ZS1s4viQg==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
-        "@types/prop-types": "*",
         "csstype": "^3.2.2"
       }
     },
@@ -1123,13 +1115,10 @@
       }
     },
     "node_modules/react": {
-      "version": "18.3.1",
-      "resolved": "https://registry.npmjs.org/react/-/react-18.3.1.tgz",
-      "integrity": "sha1-SauJIAnFOTNiW9FrJTP8dUyrKJE=",
+      "version": "19.3.0",
+      "resolved": "https://registry.npmjs.org/react/-/react-19.3.0.tgz",
+      "integrity": "sha512-E8LUcbtBWt20bbl2YoHfx4ZDBdxVTfOKtCZn9cDSJ4l6/nuoApcpIBcj47t2wZoVX8g2ZHuMHbiShgCR1T5Sog==",
       "license": "MIT",
-      "dependencies": {
-        "loose-envify": "^1.1.0"
-      },
       "engines": {
         "node": ">=0.10.0"
       }
diff --git a/python/samples/05-end-to-end/ag_ui_single_agent/frontend/package.json b/python/samples/05-end-to-end/ag_ui_single_agent/frontend/package.json
index 6a46dc0012c..b00b42ecf58 100644
--- a/python/samples/05-end-to-end/ag_ui_single_agent/frontend/package.json
+++ b/python/samples/05-end-to-end/ag_ui_single_agent/frontend/package.json
@@ -9,12 +9,12 @@
     "preview": "vite preview"
   },
   "dependencies": {
-    "react": "^18.3.1",
+    "react": "^19.3.0",
     "react-dom": "^18.3.1"
   },
   "devDependencies": {
     "@types/node": "^26.6.4",
-    "@types/react": "^18.3.3",
+    "@types/react": "^19.3.0",
     "@types/react-dom": "^18.3.0",
     "@vitejs/plugin-react": "^6.0.2",
     "typescript": "^7.0.2",
diff --git a/python/samples/05-end-to-end/ag_ui_workflow_handoff/frontend/package-lock.json b/python/samples/05-end-to-end/ag_ui_workflow_handoff/frontend/package-lock.json
index 20b30bf6c3a..8e9b7ac720f 100644
--- a/python/samples/05-end-to-end/ag_ui_workflow_handoff/frontend/package-lock.json
+++ b/python/samples/05-end-to-end/ag_ui_workflow_handoff/frontend/package-lock.json
@@ -8,12 +8,12 @@
       "name": "ag-ui-handoff-workflow-demo-frontend",
       "version": "0.1.0",
       "dependencies": {
-        "react": "^18.3.1",
+        "react": "^19.3.0",
         "react-dom": "^18.3.1"
       },
       "devDependencies": {
         "@types/node": "^26.6.4",
-        "@types/react": "^18.3.3",
+        "@types/react": "^19.3.0",
         "@types/react-dom": "^18.3.0",
         "@vitejs/plugin-react": "^6.0.2",
         "typescript": "^7.0.2",
@@ -320,21 +320,13 @@
         "undici-types": "~8.9.0"
       }
     },
-    "node_modules/@types/prop-types": {
-      "version": "15.7.15",
-      "resolved": "https://registry.npmjs.org/@types/prop-types/-/prop-types-15.7.15.tgz",
-      "integrity": "sha512-F6bEyamV9jKGAFBEmlQnesRPGOQqS2+Uwi0Em15xenOxHaf2hv6L8YCVn3rPdPJOiJfPiCnLIRyvwVaqMY3MIw==",
-      "dev": true,
-      "license": "MIT"
-    },
     "node_modules/@types/react": {
-      "version": "18.3.28",
-      "resolved": "https://registry.npmjs.org/@types/react/-/react-18.3.28.tgz",
-      "integrity": "sha512-z9VXpC7MWrhfWipitjNdgCauoMLRdIILQsAEV+ZesIzBq/oUlxk0m3ApZuMFCXdnS4U7KrI+l3WRUEGQ8K1QKw==",
+      "version": "19.3.0",
+      "resolved": "https://registry.npmjs.org/@types/react/-/react-19.3.0.tgz",
+      "integrity": "sha512-N0rFCuH9YoxG9/m61l9MfpJKfmLOVU0em7ipIz6TRgSSkvReLB9vL85GB+yr8Bs5leqpvg96JSwF4ZS1s4viQg==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
-        "@types/prop-types": "*",
         "csstype": "^3.2.2"
       }
     },
@@ -1124,13 +1116,10 @@
       }
     },
     "node_modules/react": {
-      "version": "18.3.1",
-      "resolved": "https://registry.npmjs.org/react/-/react-18.3.1.tgz",
-      "integrity": "sha512-wS+hAgJShR0KhEvPJArfuPVN1+Hz1t0Y6n5jLrGQbkb4urgPE/0Rve+1kMB1v/oWgHgm4WIcV+i7F2pTVj+2iQ==",
+      "version": "19.3.0",
+      "resolved": "https://registry.npmjs.org/react/-/react-19.3.0.tgz",
+      "integrity": "sha512-E8LUcbtBWt20bbl2YoHfx4ZDBdxVTfOKtCZn9cDSJ4l6/nuoApcpIBcj47t2wZoVX8g2ZHuMHbiShgCR1T5Sog==",
       "license": "MIT",
-      "dependencies": {
-        "loose-envify": "^1.1.0"
-      },
       "engines": {
         "node": ">=0.10.0"
       }
diff --git a/python/samples/05-end-to-end/ag_ui_workflow_handoff/frontend/package.json b/python/samples/05-end-to-end/ag_ui_workflow_handoff/frontend/package.json
index 3ce3de3578d..56aa4c20cf1 100644
--- a/python/samples/05-end-to-end/ag_ui_workflow_handoff/frontend/package.json
+++ b/python/samples/05-end-to-end/ag_ui_workflow_handoff/frontend/package.json
@@ -9,12 +9,12 @@
     "preview": "vite preview"
   },
   "dependencies": {
-    "react": "^18.3.1",
+    "react": "^19.3.0",
     "react-dom": "^18.3.1"
   },
   "devDependencies": {
     "@types/node": "^26.6.4",
-    "@types/react": "^18.3.3",
+    "@types/react": "^19.3.0",
     "@types/react-dom": "^18.3.0",
     "@vitejs/plugin-react": "^6.0.2",
     "typescript": "^7.0.2",
diff --git a/python/samples/05-end-to-end/chatkit-integration/frontend/package-lock.json b/python/samples/05-end-to-end/chatkit-integration/frontend/package-lock.json
index e6103e70356..9943234359f 100644
--- a/python/samples/05-end-to-end/chatkit-integration/frontend/package-lock.json
+++ b/python/samples/05-end-to-end/chatkit-integration/frontend/package-lock.json
@@ -9,11 +9,11 @@
             "version": "0.1.0",
             "dependencies": {
                 "@openai/chatkit-react": "^0",
-                "react": "^19.2.0",
+                "react": "^19.3.0",
                 "react-dom": "^19.2.0"
             },
             "devDependencies": {
-                "@types/react": "^19.2.0",
+                "@types/react": "^19.3.0",
                 "@types/react-dom": "^19.2.0",
                 "@vitejs/plugin-react-swc": "^4.3.1",
                 "typescript": "^7.0.2",
@@ -614,13 +614,13 @@
             }
         },
         "node_modules/@types/react": {
-            "version": "19.2.2",
-            "resolved": "https://registry.npmjs.org/@types/react/-/react-19.2.2.tgz",
-            "integrity": "sha512-6mDvHUFSjyT2B2yeNx2nUgMxh9LtOWvkhIU3uePn2I2oyNymUAX1NIsdgviM4CH+JSrp2D2hsMvJOkxY+0wNRA==",
+            "version": "19.3.0",
+            "resolved": "https://registry.npmjs.org/@types/react/-/react-19.3.0.tgz",
+            "integrity": "sha512-N0rFCuH9YoxG9/m61l9MfpJKfmLOVU0em7ipIz6TRgSSkvReLB9vL85GB+yr8Bs5leqpvg96JSwF4ZS1s4viQg==",
             "dev": true,
             "license": "MIT",
             "dependencies": {
-                "csstype": "^3.0.2"
+                "csstype": "^3.2.2"
             }
         },
         "node_modules/@types/react-dom": {
@@ -991,9 +991,9 @@
             }
         },
         "node_modules/csstype": {
-            "version": "3.1.3",
-            "resolved": "https://registry.npmjs.org/csstype/-/csstype-3.1.3.tgz",
-            "integrity": "sha512-M1uQkMl8rQK/szD0LNhtqxIPLpimGm8sOBwU7lLnCpSbTyY3yeU1Vc7l4KT5zT4s/yOxHH5O7tIuuLOCnLADRw==",
+            "version": "3.2.3",
+            "resolved": "https://registry.npmjs.org/csstype/-/csstype-3.2.3.tgz",
+            "integrity": "sha512-z1HGKcYy2xA8AGQfwrn0PAy+PB7X/GSj3UVJW9qKyn43xWa+gl5nXmU4qqLMRzWVLFC8KusUX8T/0kCiOYpAIQ==",
             "dev": true,
             "license": "MIT"
         },
@@ -1382,9 +1382,9 @@
             }
         },
         "node_modules/react": {
-            "version": "19.2.0",
-            "resolved": "https://registry.npmjs.org/react/-/react-19.2.0.tgz",
-            "integrity": "sha512-tmbWg6W31tQLeB5cdIBOicJDJRR2KzXsV7uSK9iNfLWQ5bIZfxuPEHp7M8wiHyHnn0DD1i7w3Zmin0FtkrwoCQ==",
+            "version": "19.3.0",
+            "resolved": "https://registry.npmjs.org/react/-/react-19.3.0.tgz",
+            "integrity": "sha512-E8LUcbtBWt20bbl2YoHfx4ZDBdxVTfOKtCZn9cDSJ4l6/nuoApcpIBcj47t2wZoVX8g2ZHuMHbiShgCR1T5Sog==",
             "license": "MIT",
             "engines": {
                 "node": ">=0.10.0"
diff --git a/python/samples/05-end-to-end/chatkit-integration/frontend/package.json b/python/samples/05-end-to-end/chatkit-integration/frontend/package.json
index 4e59051ae45..82d307fcf04 100644
--- a/python/samples/05-end-to-end/chatkit-integration/frontend/package.json
+++ b/python/samples/05-end-to-end/chatkit-integration/frontend/package.json
@@ -14,11 +14,11 @@
     },
     "dependencies": {
         "@openai/chatkit-react": "^0",
-        "react": "^19.2.0",
+        "react": "^19.3.0",
         "react-dom": "^19.2.0"
     },
     "devDependencies": {
-        "@types/react": "^19.2.0",
+        "@types/react": "^19.3.0",
         "@types/react-dom": "^19.2.0",
         "@vitejs/plugin-react-swc": "^4.3.1",
         "typescript": "^7.0.2",