diff --git a/viewer/package-lock.json b/viewer/package-lock.json
index acea226..8678546 100644
--- a/viewer/package-lock.json
+++ b/viewer/package-lock.json
@@ -8,7 +8,7 @@
       "name": "desktopus-viewer",
       "version": "1.0.0",
       "devDependencies": {
-        "electron": "^40.0.0",
+        "electron": "^42.1.0",
         "electron-builder": "^26.0.0"
       }
     },
@@ -134,25 +134,37 @@
       }
     },
     "node_modules/@electron/get": {
-      "version": "2.0.3",
-      "resolved": "https://registry.npmjs.org/@electron/get/-/get-2.0.3.tgz",
-      "integrity": "sha512-Qkzpg2s9GnVV2I2BjRksUi43U5e6+zaQMcjoJy0C+C5oxaKl+fmckGDQFtRpZpZV0NQekuZZ+tGz7EA9TVnQtQ==",
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/@electron/get/-/get-5.0.0.tgz",
+      "integrity": "sha512-pjoBpru1KdEtcExBnuHAP1cAc/5faoedw0hzJkL3o4/IJp7HNF1+fbrdxT3gMYRX2oJfvnA/WXeCTVQpYYxyJA==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
         "debug": "^4.1.1",
-        "env-paths": "^2.2.0",
-        "fs-extra": "^8.1.0",
-        "got": "^11.8.5",
+        "env-paths": "^3.0.0",
+        "graceful-fs": "^4.2.11",
         "progress": "^2.0.3",
-        "semver": "^6.2.0",
+        "semver": "^7.6.3",
         "sumchecker": "^3.0.1"
       },
       "engines": {
-        "node": ">=12"
+        "node": ">=22.12.0"
       },
       "optionalDependencies": {
-        "global-agent": "^3.0.0"
+        "undici": "^7.24.4"
+      }
+    },
+    "node_modules/@electron/get/node_modules/env-paths": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/env-paths/-/env-paths-3.0.0.tgz",
+      "integrity": "sha512-dtJUTepzMW3Lm/NPxRf3wP4642UWhjL2sQxc+ym2YMj1m/H2zDNQOlezafzkHwn6sMstjHTwG6iQQsctDW/b1A==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": "^12.20.0 || ^14.13.1 || >=16.0.0"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
       }
     },
     "node_modules/@electron/notarize": {
@@ -310,19 +322,6 @@
         "node": ">=22.12.0"
       }
     },
-    "node_modules/@electron/rebuild/node_modules/semver": {
-      "version": "7.7.4",
-      "resolved": "https://registry.npmjs.org/semver/-/semver-7.7.4.tgz",
-      "integrity": "sha512-vFKC2IEtQnVhpT78h1Yp8wzwrf8CM+MzKMHGJZfBtzhZNycRFnXsHk6E5TxIkkMsgNS7mdX3AGB7x2QM2di4lA==",
-      "dev": true,
-      "license": "ISC",
-      "bin": {
-        "semver": "bin/semver.js"
-      },
-      "engines": {
-        "node": ">=10"
-      }
-    },
     "node_modules/@electron/universal": {
       "version": "2.0.3",
       "resolved": "https://registry.npmjs.org/@electron/universal/-/universal-2.0.3.tgz",
@@ -710,19 +709,6 @@
         "node": "^18.17.0 || >=20.5.0"
       }
     },
-    "node_modules/@npmcli/fs/node_modules/semver": {
-      "version": "7.7.4",
-      "resolved": "https://registry.npmjs.org/semver/-/semver-7.7.4.tgz",
-      "integrity": "sha512-vFKC2IEtQnVhpT78h1Yp8wzwrf8CM+MzKMHGJZfBtzhZNycRFnXsHk6E5TxIkkMsgNS7mdX3AGB7x2QM2di4lA==",
-      "dev": true,
-      "license": "ISC",
-      "bin": {
-        "semver": "bin/semver.js"
-      },
-      "engines": {
-        "node": ">=10"
-      }
-    },
     "node_modules/@pkgjs/parseargs": {
       "version": "0.11.0",
       "resolved": "https://registry.npmjs.org/@pkgjs/parseargs/-/parseargs-0.11.0.tgz",
@@ -2093,22 +2079,22 @@
       }
     },
     "node_modules/electron": {
-      "version": "40.8.0",
-      "resolved": "https://registry.npmjs.org/electron/-/electron-40.8.0.tgz",
-      "integrity": "sha512-WoPq0Nr9Yx3g7T6VnJXdwa/rr2+VRyH3a+K+ezfMKBlf6WjxE/LmhMQabKbb6yjm9RbZhJBRcYyoLph421O2mQ==",
+      "version": "42.1.0",
+      "resolved": "https://registry.npmjs.org/electron/-/electron-42.1.0.tgz",
+      "integrity": "sha512-0szNwC/0dWtkvNce5j3ThiuL0TxBNrZN/BZhdOiGwbLreiD/+u3MGpkct4hA5Ycagb8MXjpEr5/oosi+FwuKRQ==",
       "dev": true,
-      "hasInstallScript": true,
       "license": "MIT",
       "dependencies": {
-        "@electron/get": "^2.0.0",
+        "@electron/get": "^5.0.0",
         "@types/node": "^24.9.0",
         "extract-zip": "^2.0.1"
       },
       "bin": {
-        "electron": "cli.js"
+        "electron": "cli.js",
+        "install-electron": "install.js"
       },
       "engines": {
-        "node": ">= 12.20.55"
+        "node": ">= 22.12.0"
       }
     },
     "node_modules/electron-builder": {
@@ -2575,21 +2561,6 @@
         "node": ">= 6"
       }
     },
-    "node_modules/fs-extra": {
-      "version": "8.1.0",
-      "resolved": "https://registry.npmjs.org/fs-extra/-/fs-extra-8.1.0.tgz",
-      "integrity": "sha512-yhlQgA6mnOJUKOsRUFsgJdQCvkKhcz8tlZG5HBQfReYZy46OwLcY+Zia0mtdHsOo9y/hP+CxMN0TU9QxoOtG4g==",
-      "dev": true,
-      "license": "MIT",
-      "dependencies": {
-        "graceful-fs": "^4.2.0",
-        "jsonfile": "^4.0.0",
-        "universalify": "^0.1.0"
-      },
-      "engines": {
-        "node": ">=6 <7 || >=8"
-      }
-    },
     "node_modules/fs-minipass": {
       "version": "3.0.3",
       "resolved": "https://registry.npmjs.org/fs-minipass/-/fs-minipass-3.0.3.tgz",
@@ -2757,20 +2728,6 @@
         "node": ">=10.0"
       }
     },
-    "node_modules/global-agent/node_modules/semver": {
-      "version": "7.7.4",
-      "resolved": "https://registry.npmjs.org/semver/-/semver-7.7.4.tgz",
-      "integrity": "sha512-vFKC2IEtQnVhpT78h1Yp8wzwrf8CM+MzKMHGJZfBtzhZNycRFnXsHk6E5TxIkkMsgNS7mdX3AGB7x2QM2di4lA==",
-      "dev": true,
-      "license": "ISC",
-      "optional": true,
-      "bin": {
-        "semver": "bin/semver.js"
-      },
-      "engines": {
-        "node": ">=10"
-      }
-    },
     "node_modules/globalthis": {
       "version": "1.0.4",
       "resolved": "https://registry.npmjs.org/globalthis/-/globalthis-1.0.4.tgz",
@@ -3581,19 +3538,6 @@
         "node": ">=22.12.0"
       }
     },
-    "node_modules/node-abi/node_modules/semver": {
-      "version": "7.7.4",
-      "resolved": "https://registry.npmjs.org/semver/-/semver-7.7.4.tgz",
-      "integrity": "sha512-vFKC2IEtQnVhpT78h1Yp8wzwrf8CM+MzKMHGJZfBtzhZNycRFnXsHk6E5TxIkkMsgNS7mdX3AGB7x2QM2di4lA==",
-      "dev": true,
-      "license": "ISC",
-      "bin": {
-        "semver": "bin/semver.js"
-      },
-      "engines": {
-        "node": ">=10"
-      }
-    },
     "node_modules/node-addon-api": {
       "version": "1.7.2",
       "resolved": "https://registry.npmjs.org/node-addon-api/-/node-addon-api-1.7.2.tgz",
@@ -3612,19 +3556,6 @@
         "semver": "^7.3.5"
       }
     },
-    "node_modules/node-api-version/node_modules/semver": {
-      "version": "7.7.4",
-      "resolved": "https://registry.npmjs.org/semver/-/semver-7.7.4.tgz",
-      "integrity": "sha512-vFKC2IEtQnVhpT78h1Yp8wzwrf8CM+MzKMHGJZfBtzhZNycRFnXsHk6E5TxIkkMsgNS7mdX3AGB7x2QM2di4lA==",
-      "dev": true,
-      "license": "ISC",
-      "bin": {
-        "semver": "bin/semver.js"
-      },
-      "engines": {
-        "node": ">=10"
-      }
-    },
     "node_modules/node-gyp": {
       "version": "11.5.0",
       "resolved": "https://registry.npmjs.org/node-gyp/-/node-gyp-11.5.0.tgz",
@@ -3650,19 +3581,6 @@
         "node": "^18.17.0 || >=20.5.0"
       }
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-    "node_modules/node-gyp/node_modules/semver": {
-      "version": "7.7.4",
-      "resolved": "https://registry.npmjs.org/semver/-/semver-7.7.4.tgz",
-      "integrity": "sha512-vFKC2IEtQnVhpT78h1Yp8wzwrf8CM+MzKMHGJZfBtzhZNycRFnXsHk6E5TxIkkMsgNS7mdX3AGB7x2QM2di4lA==",
-      "dev": true,
-      "license": "ISC",
-      "bin": {
-        "semver": "bin/semver.js"
-      },
-      "engines": {
-        "node": ">=10"
-      }
-    },
     "node_modules/nopt": {
       "version": "8.1.0",
       "resolved": "https://registry.npmjs.org/nopt/-/nopt-8.1.0.tgz",
@@ -4193,13 +4111,16 @@
       }
     },
     "node_modules/semver": {
-      "version": "6.3.1",
-      "resolved": "https://registry.npmjs.org/semver/-/semver-6.3.1.tgz",
-      "integrity": "sha512-BR7VvDCVHO+q2xBEWskxS6DJE1qRnb7DxzUrogb71CWoSficBxYsiAGd+Kl0mmq/MprG9yArRkyrQxTO6XjMzA==",
+      "version": "7.8.0",
+      "resolved": "https://registry.npmjs.org/semver/-/semver-7.8.0.tgz",
+      "integrity": "sha512-AcM7dV/5ul4EekoQ29Agm5vri8JNqRyj39o0qpX6vDF2GZrtutZl5RwgD1XnZjiTAfncsJhMI48QQH3sN87YNA==",
       "dev": true,
       "license": "ISC",
       "bin": {
         "semver": "bin/semver.js"
+      },
+      "engines": {
+        "node": ">=10"
       }
     },
     "node_modules/semver-compare": {
@@ -4270,19 +4191,6 @@
         "node": ">=10"
       }
     },
-    "node_modules/simple-update-notifier/node_modules/semver": {
-      "version": "7.7.4",
-      "resolved": "https://registry.npmjs.org/semver/-/semver-7.7.4.tgz",
-      "integrity": "sha512-vFKC2IEtQnVhpT78h1Yp8wzwrf8CM+MzKMHGJZfBtzhZNycRFnXsHk6E5TxIkkMsgNS7mdX3AGB7x2QM2di4lA==",
-      "dev": true,
-      "license": "ISC",
-      "bin": {
-        "semver": "bin/semver.js"
-      },
-      "engines": {
-        "node": ">=10"
-      }
-    },
     "node_modules/slice-ansi": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/slice-ansi/-/slice-ansi-3.0.0.tgz",
@@ -4658,6 +4566,17 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
     },
+    "node_modules/undici": {
+      "version": "7.25.0",
+      "resolved": "https://registry.npmjs.org/undici/-/undici-7.25.0.tgz",
+      "integrity": "sha512-xXnp4kTyor2Zq+J1FfPI6Eq3ew5h6Vl0F/8d9XU5zZQf1tX9s2Su1/3PiMmUANFULpmksxkClamIZcaUqryHsQ==",
+      "dev": true,
+      "license": "MIT",
+      "optional": true,
+      "engines": {
+        "node": ">=20.18.1"
+      }
+    },
     "node_modules/undici-types": {
       "version": "7.16.0",
       "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-7.16.0.tgz",
diff --git a/viewer/package.json b/viewer/package.json
index b3c79a3..705311f 100644
--- a/viewer/package.json
+++ b/viewer/package.json
@@ -29,7 +29,7 @@
     ]
   },
   "devDependencies": {
-    "electron": "^40.0.0",
+    "electron": "^42.1.0",
     "electron-builder": "^26.0.0"
   }
 }