diff --git a/packages/react-cookie-demo/package.json b/packages/react-cookie-demo/package.json
index 7a2dbe96..79524cb6 100644
--- a/packages/react-cookie-demo/package.json
+++ b/packages/react-cookie-demo/package.json
@@ -13,9 +13,9 @@
     "@babel/register": "^7.25.9",
     "express": "^4.21.2",
     "prop-types": "^15.8.1",
-    "react": "^18.3.1",
+    "react": "^19.0.0",
     "react-cookie": "^7.0.0",
-    "react-dom": "^18.3.1",
+    "react-dom": "^19.0.0",
     "universal-cookie-express": "^7.0.0"
   },
   "devDependencies": {
@@ -29,7 +29,7 @@
     "babel-jest": "^29.7.0",
     "babel-loader": "^9.2.1",
     "jest": "^29.7.0",
-    "react-test-renderer": "^18.3.1",
+    "react-test-renderer": "^19.0.0",
     "webpack": "^5.97.1",
     "webpack-cli": "^6.0.1"
   }
diff --git a/packages/react-cookie/package.json b/packages/react-cookie/package.json
index f2a1bb02..b6a27dfe 100644
--- a/packages/react-cookie/package.json
+++ b/packages/react-cookie/package.json
@@ -51,8 +51,8 @@
   },
   "devDependencies": {
     "@babel/cli": "^7.26.4",
-    "react": "^18.3.1",
-    "react-dom": "^18.3.1",
+    "react": "^19.0.0",
+    "react-dom": "^19.0.0",
     "rimraf": "^6.0.1",
     "rollup": "^4.30.1",
     "typescript": "^5.7.3"
diff --git a/yarn.lock b/yarn.lock
index 96c3fe28..bc386241 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -5837,7 +5837,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"loose-envify@npm:^1.1.0, loose-envify@npm:^1.4.0":
+"loose-envify@npm:^1.4.0":
   version: 1.4.0
   resolution: "loose-envify@npm:1.4.0"
   dependencies:
@@ -6789,10 +6789,10 @@ __metadata:
     express: "npm:^4.21.2"
     jest: "npm:^29.7.0"
     prop-types: "npm:^15.8.1"
-    react: "npm:^18.3.1"
+    react: "npm:^19.0.0"
     react-cookie: "npm:^7.0.0"
-    react-dom: "npm:^18.3.1"
-    react-test-renderer: "npm:^18.3.1"
+    react-dom: "npm:^19.0.0"
+    react-test-renderer: "npm:^19.0.0"
     universal-cookie-express: "npm:^7.0.0"
     webpack: "npm:^5.97.1"
     webpack-cli: "npm:^6.0.1"
@@ -6806,8 +6806,8 @@ __metadata:
     "@babel/cli": "npm:^7.26.4"
     "@types/hoist-non-react-statics": "npm:^3.3.6"
     hoist-non-react-statics: "npm:^3.3.2"
-    react: "npm:^18.3.1"
-    react-dom: "npm:^18.3.1"
+    react: "npm:^19.0.0"
+    react-dom: "npm:^19.0.0"
     rimraf: "npm:^6.0.1"
     rollup: "npm:^4.30.1"
     typescript: "npm:^5.7.3"
@@ -6817,22 +6817,14 @@ __metadata:
   languageName: unknown
   linkType: soft
 
-"react-dom@npm:^18.3.1":
-  version: 18.3.1
-  resolution: "react-dom@npm:18.3.1"
+"react-dom@npm:^19.0.0":
+  version: 19.0.0
+  resolution: "react-dom@npm:19.0.0"
   dependencies:
-    loose-envify: "npm:^1.1.0"
-    scheduler: "npm:^0.23.2"
+    scheduler: "npm:^0.25.0"
   peerDependencies:
-    react: ^18.3.1
-  checksum: 10c0/a752496c1941f958f2e8ac56239172296fcddce1365ce45222d04a1947e0cc5547df3e8447f855a81d6d39f008d7c32eab43db3712077f09e3f67c4874973e85
-  languageName: node
-  linkType: hard
-
-"react-is@npm:^16.12.0 || ^17.0.0 || ^18.0.0, react-is@npm:^18.0.0, react-is@npm:^18.3.1":
-  version: 18.3.1
-  resolution: "react-is@npm:18.3.1"
-  checksum: 10c0/f2f1e60010c683479e74c63f96b09fb41603527cd131a9959e2aee1e5a8b0caf270b365e5ca77d4a6b18aae659b60a86150bb3979073528877029b35aecd2072
+    react: ^19.0.0
+  checksum: 10c0/a36ce7ab507b237ae2759c984cdaad4af4096d8199fb65b3815c16825e5cfeb7293da790a3fc2184b52bfba7ba3ff31c058c01947aff6fd1a3701632aabaa6a9
   languageName: node
   linkType: hard
 
@@ -6850,37 +6842,36 @@ __metadata:
   languageName: node
   linkType: hard
 
-"react-shallow-renderer@npm:^16.15.0":
-  version: 16.15.0
-  resolution: "react-shallow-renderer@npm:16.15.0"
-  dependencies:
-    object-assign: "npm:^4.1.1"
-    react-is: "npm:^16.12.0 || ^17.0.0 || ^18.0.0"
-  peerDependencies:
-    react: ^16.0.0 || ^17.0.0 || ^18.0.0
-  checksum: 10c0/c194d741792e86043a4ae272f7353c1cb9412bc649945c4220c6a101a6ea5410cceb3d65d5a4d750f11a24f7426e8eec7977e8a4e3ad5d3ee235ca2b18166fa8
+"react-is@npm:^18.0.0":
+  version: 18.3.1
+  resolution: "react-is@npm:18.3.1"
+  checksum: 10c0/f2f1e60010c683479e74c63f96b09fb41603527cd131a9959e2aee1e5a8b0caf270b365e5ca77d4a6b18aae659b60a86150bb3979073528877029b35aecd2072
   languageName: node
   linkType: hard
 
-"react-test-renderer@npm:^18.3.1":
-  version: 18.3.1
-  resolution: "react-test-renderer@npm:18.3.1"
+"react-is@npm:^19.0.0":
+  version: 19.0.0
+  resolution: "react-is@npm:19.0.0"
+  checksum: 10c0/d1be8e8500cf04f76df71942a21ef3a71266397a383d7ec8885f35190df818d35c65efd35aed7be47a89ad99aaff2c52e0c4e39e8930844a6b997622e50625a8
+  languageName: node
+  linkType: hard
+
+"react-test-renderer@npm:^19.0.0":
+  version: 19.0.0
+  resolution: "react-test-renderer@npm:19.0.0"
   dependencies:
-    react-is: "npm:^18.3.1"
-    react-shallow-renderer: "npm:^16.15.0"
-    scheduler: "npm:^0.23.2"
+    react-is: "npm:^19.0.0"
+    scheduler: "npm:^0.25.0"
   peerDependencies:
-    react: ^18.3.1
-  checksum: 10c0/c633558ef9af33bc68f0c4dbb5163a004c4fb9eade7bd0a7cfc0355fb367f36bd9d96533c90b7e85a146be6c525113a15f58683d269e0177ad77e2b04d4fe51c
+    react: ^19.0.0
+  checksum: 10c0/67c34dae4d3a60b9306d2b5cb6db436376ef20c651aaf092644298e3ffb92cd3c7b0da2017e7f1395bf2de8b42429874a5a63e8cc3c21febbab31b0309e41862
   languageName: node
   linkType: hard
 
-"react@npm:^18.3.1":
-  version: 18.3.1
-  resolution: "react@npm:18.3.1"
-  dependencies:
-    loose-envify: "npm:^1.1.0"
-  checksum: 10c0/283e8c5efcf37802c9d1ce767f302dd569dd97a70d9bb8c7be79a789b9902451e0d16334b05d73299b20f048cbc3c7d288bbbde10b701fa194e2089c237dbea3
+"react@npm:^19.0.0":
+  version: 19.0.0
+  resolution: "react@npm:19.0.0"
+  checksum: 10c0/9cad8f103e8e3a16d15cb18a0d8115d8bd9f9e1ce3420310aea381eb42aa0a4f812cf047bb5441349257a05fba8a291515691e3cb51267279b2d2c3253f38471
   languageName: node
   linkType: hard
 
@@ -7251,12 +7242,10 @@ __metadata:
   languageName: node
   linkType: hard
 
-"scheduler@npm:^0.23.2":
-  version: 0.23.2
-  resolution: "scheduler@npm:0.23.2"
-  dependencies:
-    loose-envify: "npm:^1.1.0"
-  checksum: 10c0/26383305e249651d4c58e6705d5f8425f153211aef95f15161c151f7b8de885f24751b377e4a0b3dd42cce09aad3f87a61dab7636859c0d89b7daf1a1e2a5c78
+"scheduler@npm:^0.25.0":
+  version: 0.25.0
+  resolution: "scheduler@npm:0.25.0"
+  checksum: 10c0/a4bb1da406b613ce72c1299db43759526058fdcc413999c3c3e0db8956df7633acf395cb20eb2303b6a65d658d66b6585d344460abaee8080b4aa931f10eaafe
   languageName: node
   linkType: hard