diff --git a/B08_DesignDetail/openwebcad/package-lock.json b/B08_DesignDetail/openwebcad/package-lock.json
index 231f22b2..d6c4ec55 100644
--- a/B08_DesignDetail/openwebcad/package-lock.json
+++ b/B08_DesignDetail/openwebcad/package-lock.json
@@ -39,7 +39,7 @@
         "biome": "^0.3.3",
         "puppeteer": "^24.1.1",
         "tailwindcss": "^4.1.3",
-        "typescript": "^5.5.4",
+        "typescript": "^5.2.2",
         "vite": "^6.2.6",
         "vite-plugin-svgr": "^4.3.0",
         "vitest": "^3.1.1"
@@ -6853,7 +6853,6 @@
       "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.5.4.tgz",
       "integrity": "sha512-Mtq29sKDAEYP7aljRgtPOpTvOfbwRWlS6dPRzwjdE+C0R4brX/GUyhHSecbHMFLNBLcJIPt9nl9yG5TZ1weH+Q==",
       "dev": true,
-      "license": "Apache-2.0",
       "bin": {
         "tsc": "bin/tsc",
         "tsserver": "bin/tsserver"
diff --git a/B08_DesignDetail/openwebcad/package.json b/B08_DesignDetail/openwebcad/package.json
index 0a6f181e..c69cc264 100644
--- a/B08_DesignDetail/openwebcad/package.json
+++ b/B08_DesignDetail/openwebcad/package.json
@@ -45,7 +45,7 @@
     "biome": "^0.3.3",
     "puppeteer": "^24.1.1",
     "tailwindcss": "^4.1.3",
-    "typescript": "^5.5.4",
+    "typescript": "^5.2.2",
     "vite": "^6.2.6",
     "vite-plugin-svgr": "^4.3.0",
     "vitest": "^3.1.1"