diff --git a/demos/toolkit/next/package-lock.json b/demos/toolkit/next/package-lock.json
index eac2fb80..6ccefd19 100644
--- a/demos/toolkit/next/package-lock.json
+++ b/demos/toolkit/next/package-lock.json
@@ -14,7 +14,8 @@
         "@types/react": "^19.0.0",
         "@types/react-dom": "^19.0.0",
         "@yfiles/demo-app": "../../demo-app",
-        "next": "^15.2.0",
+        "@yfiles/yfiles": "../../../lib-dev/yfiles-30.0.4+dev.tgz",
+        "next": "^15.5.7",
         "react": "^19.0.0",
         "react-dom": "^19.0.0"
       },
@@ -24,8 +25,7 @@
     },
     "../../demo-app": {
       "name": "@yfiles/demo-app",
-      "version": "30.0.0",
-      "hasInstallScript": true,
+      "version": "30.0.4",
       "license": "https://www.yworks.com/products/yfiles-for-html/sla",
       "dependencies": {
         "@codemirror/lang-css": "^6.3.0",
@@ -33,7 +33,7 @@
         "@codemirror/lang-json": "^6.0.0",
         "@codemirror/lang-xml": "^6.1.0",
         "@codemirror/legacy-modes": "^6.5.0",
-        "@yfiles/yfiles": "^30.0.0",
+        "@yfiles/yfiles": "^30.0.4+dev",
         "codemirror": "^6.0.2",
         "fast-xml-parser": "^5.2.0",
         "postcss": "^8.5.0"
@@ -495,15 +495,15 @@
       }
     },
     "node_modules/@next/env": {
-      "version": "15.5.4",
-      "resolved": "https://registry.npmjs.org/@next/env/-/env-15.5.4.tgz",
-      "integrity": "sha512-27SQhYp5QryzIT5uO8hq99C69eLQ7qkzkDPsk3N+GuS2XgOgoYEeOav7Pf8Tn4drECOVDsDg8oj+/DVy8qQL2A==",
+      "version": "15.5.7",
+      "resolved": "https://registry.npmjs.org/@next/env/-/env-15.5.7.tgz",
+      "integrity": "sha512-4h6Y2NyEkIEN7Z8YxkA27pq6zTkS09bUSYC0xjd0NpwFxjnIKeZEeH591o5WECSmjpUhLn3H2QLJcDye3Uzcvg==",
       "license": "MIT"
     },
     "node_modules/@next/swc-darwin-arm64": {
-      "version": "15.5.4",
-      "resolved": "https://registry.npmjs.org/@next/swc-darwin-arm64/-/swc-darwin-arm64-15.5.4.tgz",
-      "integrity": "sha512-nopqz+Ov6uvorej8ndRX6HlxCYWCO3AHLfKK2TYvxoSB2scETOcfm/HSS3piPqc3A+MUgyHoqE6je4wnkjfrOA==",
+      "version": "15.5.7",
+      "resolved": "https://registry.npmjs.org/@next/swc-darwin-arm64/-/swc-darwin-arm64-15.5.7.tgz",
+      "integrity": "sha512-IZwtxCEpI91HVU/rAUOOobWSZv4P2DeTtNaCdHqLcTJU4wdNXgAySvKa/qJCgR5m6KI8UsKDXtO2B31jcaw1Yw==",
       "cpu": [
         "arm64"
       ],
@@ -517,9 +517,9 @@
       }
     },
     "node_modules/@next/swc-darwin-x64": {
-      "version": "15.5.4",
-      "resolved": "https://registry.npmjs.org/@next/swc-darwin-x64/-/swc-darwin-x64-15.5.4.tgz",
-      "integrity": "sha512-QOTCFq8b09ghfjRJKfb68kU9k2K+2wsC4A67psOiMn849K9ZXgCSRQr0oVHfmKnoqCbEmQWG1f2h1T2vtJJ9mA==",
+      "version": "15.5.7",
+      "resolved": "https://registry.npmjs.org/@next/swc-darwin-x64/-/swc-darwin-x64-15.5.7.tgz",
+      "integrity": "sha512-UP6CaDBcqaCBuiq/gfCEJw7sPEoX1aIjZHnBWN9v9qYHQdMKvCKcAVs4OX1vIjeE+tC5EIuwDTVIoXpUes29lg==",
       "cpu": [
         "x64"
       ],
@@ -533,9 +533,9 @@
       }
     },
     "node_modules/@next/swc-linux-arm64-gnu": {
-      "version": "15.5.4",
-      "resolved": "https://registry.npmjs.org/@next/swc-linux-arm64-gnu/-/swc-linux-arm64-gnu-15.5.4.tgz",
-      "integrity": "sha512-eRD5zkts6jS3VfE/J0Kt1VxdFqTnMc3QgO5lFE5GKN3KDI/uUpSyK3CjQHmfEkYR4wCOl0R0XrsjpxfWEA++XA==",
+      "version": "15.5.7",
+      "resolved": "https://registry.npmjs.org/@next/swc-linux-arm64-gnu/-/swc-linux-arm64-gnu-15.5.7.tgz",
+      "integrity": "sha512-NCslw3GrNIw7OgmRBxHtdWFQYhexoUCq+0oS2ccjyYLtcn1SzGzeM54jpTFonIMUjNbHmpKpziXnpxhSWLcmBA==",
       "cpu": [
         "arm64"
       ],
@@ -549,9 +549,9 @@
       }
     },
     "node_modules/@next/swc-linux-arm64-musl": {
-      "version": "15.5.4",
-      "resolved": "https://registry.npmjs.org/@next/swc-linux-arm64-musl/-/swc-linux-arm64-musl-15.5.4.tgz",
-      "integrity": "sha512-TOK7iTxmXFc45UrtKqWdZ1shfxuL4tnVAOuuJK4S88rX3oyVV4ZkLjtMT85wQkfBrOOvU55aLty+MV8xmcJR8A==",
+      "version": "15.5.7",
+      "resolved": "https://registry.npmjs.org/@next/swc-linux-arm64-musl/-/swc-linux-arm64-musl-15.5.7.tgz",
+      "integrity": "sha512-nfymt+SE5cvtTrG9u1wdoxBr9bVB7mtKTcj0ltRn6gkP/2Nu1zM5ei8rwP9qKQP0Y//umK+TtkKgNtfboBxRrw==",
       "cpu": [
         "arm64"
       ],
@@ -565,9 +565,9 @@
       }
     },
     "node_modules/@next/swc-linux-x64-gnu": {
-      "version": "15.5.4",
-      "resolved": "https://registry.npmjs.org/@next/swc-linux-x64-gnu/-/swc-linux-x64-gnu-15.5.4.tgz",
-      "integrity": "sha512-7HKolaj+481FSW/5lL0BcTkA4Ueam9SPYWyN/ib/WGAFZf0DGAN8frNpNZYFHtM4ZstrHZS3LY3vrwlIQfsiMA==",
+      "version": "15.5.7",
+      "resolved": "https://registry.npmjs.org/@next/swc-linux-x64-gnu/-/swc-linux-x64-gnu-15.5.7.tgz",
+      "integrity": "sha512-hvXcZvCaaEbCZcVzcY7E1uXN9xWZfFvkNHwbe/n4OkRhFWrs1J1QV+4U1BN06tXLdaS4DazEGXwgqnu/VMcmqw==",
       "cpu": [
         "x64"
       ],
@@ -581,9 +581,9 @@
       }
     },
     "node_modules/@next/swc-linux-x64-musl": {
-      "version": "15.5.4",
-      "resolved": "https://registry.npmjs.org/@next/swc-linux-x64-musl/-/swc-linux-x64-musl-15.5.4.tgz",
-      "integrity": "sha512-nlQQ6nfgN0nCO/KuyEUwwOdwQIGjOs4WNMjEUtpIQJPR2NUfmGpW2wkJln1d4nJ7oUzd1g4GivH5GoEPBgfsdw==",
+      "version": "15.5.7",
+      "resolved": "https://registry.npmjs.org/@next/swc-linux-x64-musl/-/swc-linux-x64-musl-15.5.7.tgz",
+      "integrity": "sha512-4IUO539b8FmF0odY6/SqANJdgwn1xs1GkPO5doZugwZ3ETF6JUdckk7RGmsfSf7ws8Qb2YB5It33mvNL/0acqA==",
       "cpu": [
         "x64"
       ],
@@ -597,9 +597,9 @@
       }
     },
     "node_modules/@next/swc-win32-arm64-msvc": {
-      "version": "15.5.4",
-      "resolved": "https://registry.npmjs.org/@next/swc-win32-arm64-msvc/-/swc-win32-arm64-msvc-15.5.4.tgz",
-      "integrity": "sha512-PcR2bN7FlM32XM6eumklmyWLLbu2vs+D7nJX8OAIoWy69Kef8mfiN4e8TUv2KohprwifdpFKPzIP1njuCjD0YA==",
+      "version": "15.5.7",
+      "resolved": "https://registry.npmjs.org/@next/swc-win32-arm64-msvc/-/swc-win32-arm64-msvc-15.5.7.tgz",
+      "integrity": "sha512-CpJVTkYI3ZajQkC5vajM7/ApKJUOlm6uP4BknM3XKvJ7VXAvCqSjSLmM0LKdYzn6nBJVSjdclx8nYJSa3xlTgQ==",
       "cpu": [
         "arm64"
       ],
@@ -613,9 +613,9 @@
       }
     },
     "node_modules/@next/swc-win32-x64-msvc": {
-      "version": "15.5.4",
-      "resolved": "https://registry.npmjs.org/@next/swc-win32-x64-msvc/-/swc-win32-x64-msvc-15.5.4.tgz",
-      "integrity": "sha512-1ur2tSHZj8Px/KMAthmuI9FMp/YFusMMGoRNJaRZMOlSkgvLjzosSdQI0cJAKogdHl3qXUQKL9MGaYvKwA7DXg==",
+      "version": "15.5.7",
+      "resolved": "https://registry.npmjs.org/@next/swc-win32-x64-msvc/-/swc-win32-x64-msvc-15.5.7.tgz",
+      "integrity": "sha512-gMzgBX164I6DN+9/PGA+9dQiwmTkE4TloBNx8Kv9UiGARsr9Nba7IpcBRA1iTV9vwlYnrE3Uy6I7Aj6qLjQuqw==",
       "cpu": [
         "x64"
       ],
@@ -669,6 +669,11 @@
       "resolved": "../../demo-app",
       "link": true
     },
+    "node_modules/@yfiles/yfiles": {
+      "version": "30.0.4+dev",
+      "resolved": "file:../../../lib-dev/yfiles-30.0.4+dev.tgz",
+      "integrity": "sha512-GtDSYKg25rXfGPmAa+zFaNKcZ/YO7cdh5S6NA+d/B+hplRliNDmUdM3qqNsDN1knY6KSTIdlrt24if0ARcVxLA=="
+    },
     "node_modules/caniuse-lite": {
       "version": "1.0.30001746",
       "resolved": "https://registry.npmjs.org/caniuse-lite/-/caniuse-lite-1.0.30001746.tgz",
@@ -730,12 +735,12 @@
       }
     },
     "node_modules/next": {
-      "version": "15.5.4",
-      "resolved": "https://registry.npmjs.org/next/-/next-15.5.4.tgz",
-      "integrity": "sha512-xH4Yjhb82sFYQfY3vbkJfgSDgXvBB6a8xPs9i35k6oZJRoQRihZH+4s9Yo2qsWpzBmZ3lPXaJ2KPXLfkvW4LnA==",
+      "version": "15.5.7",
+      "resolved": "https://registry.npmjs.org/next/-/next-15.5.7.tgz",
+      "integrity": "sha512-+t2/0jIJ48kUpGKkdlhgkv+zPTEOoXyr60qXe68eB/pl3CMJaLeIGjzp5D6Oqt25hCBiBTt8wEeeAzfJvUKnPQ==",
       "license": "MIT",
       "dependencies": {
-        "@next/env": "15.5.4",
+        "@next/env": "15.5.7",
         "@swc/helpers": "0.5.15",
         "caniuse-lite": "^1.0.30001579",
         "postcss": "8.4.31",
@@ -748,14 +753,14 @@
         "node": "^18.18.0 || ^19.8.0 || >= 20.0.0"
       },
       "optionalDependencies": {
-        "@next/swc-darwin-arm64": "15.5.4",
-        "@next/swc-darwin-x64": "15.5.4",
-        "@next/swc-linux-arm64-gnu": "15.5.4",
-        "@next/swc-linux-arm64-musl": "15.5.4",
-        "@next/swc-linux-x64-gnu": "15.5.4",
-        "@next/swc-linux-x64-musl": "15.5.4",
-        "@next/swc-win32-arm64-msvc": "15.5.4",
-        "@next/swc-win32-x64-msvc": "15.5.4",
+        "@next/swc-darwin-arm64": "15.5.7",
+        "@next/swc-darwin-x64": "15.5.7",
+        "@next/swc-linux-arm64-gnu": "15.5.7",
+        "@next/swc-linux-arm64-musl": "15.5.7",
+        "@next/swc-linux-x64-gnu": "15.5.7",
+        "@next/swc-linux-x64-musl": "15.5.7",
+        "@next/swc-win32-arm64-msvc": "15.5.7",
+        "@next/swc-win32-x64-msvc": "15.5.7",
         "sharp": "^0.34.3"
       },
       "peerDependencies": {
@@ -957,11 +962,6 @@
       "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-6.21.0.tgz",
       "integrity": "sha512-iwDZqg0QAGrg9Rav5H4n0M64c3mkR59cJ6wQp+7C4nI0gsmExaedaYLNO44eT4AtBBwjbTiGPMlt2Md0T9H9JQ==",
       "license": "MIT"
-    },
-    "node_modules/@yfiles/yfiles": {
-      "version": "30.0.4+dev",
-      "integrity": "sha512-GtDSYKg25rXfGPmAa+zFaNKcZ/YO7cdh5S6NA+d/B+hplRliNDmUdM3qqNsDN1knY6KSTIdlrt24if0ARcVxLA==",
-      "resolved": "file:../../../lib-dev/yfiles-30.0.4+dev.tgz"
     }
   }
-}
\ No newline at end of file
+}
diff --git a/demos/toolkit/next/package.json b/demos/toolkit/next/package.json
index 4ca3e3e0..a41ab582 100644
--- a/demos/toolkit/next/package.json
+++ b/demos/toolkit/next/package.json
@@ -15,7 +15,7 @@
     "@types/react": "^19.0.0",
     "@types/react-dom": "^19.0.0",
     "@yfiles/demo-app": "../../demo-app",
-    "next": "^15.2.0",
+    "next": "^15.5.7",
     "react": "^19.0.0",
     "react-dom": "^19.0.0",
     "@yfiles/yfiles": "../../../lib-dev/yfiles-30.0.4+dev.tgz"