diff --git a/.gitignore b/.gitignore
index b2604fb..b947c8b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -11,3 +11,4 @@
 
 *.iml
 venv/
+__pycache__/
diff --git a/assets/licenses.txt b/assets/licenses.txt
index 5cb4c46..ae191a4 100644
--- a/assets/licenses.txt
+++ b/assets/licenses.txt
@@ -1011,7 +1011,7 @@ third-party archives.
 
 The following npm package may be included in this product:
 
- - typescript@5.8.3
+ - typescript@5.9.2
 
 This package contains the following license:
 
diff --git a/frontend/misc/scene.ts b/frontend/misc/scene.ts
index a2e1e65..cce7ae3 100644
--- a/frontend/misc/scene.ts
+++ b/frontend/misc/scene.ts
@@ -99,7 +99,7 @@ export class SceneMgr {
         let transform = (new Matrix4()).makeTranslation(bb.getCenter(new Vector3()));
         newAxes(helpersDoc, bb.getSize(new Vector3()).multiplyScalar(0.5), transform);
         newGridBox(helpersDoc, bb.getSize(new Vector3()), transform);
-        let helpersUrl = URL.createObjectURL(new Blob([await toBuffer(helpersDoc)]));
+        let helpersUrl = URL.createObjectURL(new Blob([await toBuffer(helpersDoc) as ArrayBufferView<ArrayBuffer>]));
         let newDocument = await SceneMgr.loadModel(sceneUrl, document, extrasNameValueHelpers, helpersUrl, false, reloadScene);
         URL.revokeObjectURL(helpersUrl);
         return newDocument;
@@ -112,7 +112,7 @@ export class SceneMgr {
 
         // Serialize the document into a GLB and update the viewerSrc
         let buffer = await toBuffer(document);
-        let blob = new Blob([buffer], {type: 'model/gltf-binary'});
+        let blob = new Blob([buffer as ArrayBufferView<ArrayBuffer>], {type: 'model/gltf-binary'});
         console.debug("Showing current doc", document, "with", buffer.length, "total bytes");
         if (sceneUrl.value.startsWith("blob:")) URL.revokeObjectURL(sceneUrl.value);
         sceneUrl.value = URL.createObjectURL(blob);
diff --git a/frontend/tools/PlaygroundDialogContent.vue b/frontend/tools/PlaygroundDialogContent.vue
index 51af656..720f47e 100644
--- a/frontend/tools/PlaygroundDialogContent.vue
+++ b/frontend/tools/PlaygroundDialogContent.vue
@@ -145,7 +145,7 @@ function onModelData(modelData: string) {
     // - Save for upload and share link feature
     builtModelsGlb[modelMetadata.name] = binaryData;
     // - Create a Blob from the binary data to be used as a URL
-    const blob = new Blob([binaryData], {type: 'model/gltf-binary'});
+    const blob = new Blob([binaryData as ArrayBufferView<ArrayBuffer>], {type: 'model/gltf-binary'});
     modelMetadata.url = URL.createObjectURL(blob); // Set the hacked URL in the model metadata XXX: revoked on App.vue
   } else {
     delete builtModelsGlb[modelMetadata.name]; // Remove from built models if it's a remove request
diff --git a/frontend/tools/upload-file.ts b/frontend/tools/upload-file.ts
index 754eb15..0c08a43 100644
--- a/frontend/tools/upload-file.ts
+++ b/frontend/tools/upload-file.ts
@@ -53,7 +53,7 @@ export async function uploadFile(name: string, data: Uint8Array): Promise<string
     // Upload file to the locker
     const uploadUrl = `https://vouz-backend.onrender.com/api/upload`;
     const formData = new FormData();
-    formData.append('file', new Blob([data], {type: 'application/octet-stream'}), name);
+    formData.append('file', new Blob([data as ArrayBufferView<ArrayBuffer>], {type: 'application/octet-stream'}), name);
     formData.append("name", encrypt(lockerName));
     formData.append("passkey", encrypt(lockerName));
     const response = await fetch(uploadUrl, {
diff --git a/package.json b/package.json
index fa618cf..2bc1fa6 100644
--- a/package.json
+++ b/package.json
@@ -47,7 +47,7 @@
     "generate-license-file": "^4.0.0",
     "npm-run-all2": "^8.0.0",
     "terser": "^5.36.0",
-    "typescript": "~5.8.0",
+    "typescript": "^5.9.2",
     "vite": "^7.0.0",
     "vite-plugin-static-copy": "^3.1.1",
     "vue-tsc": "^3.0.0"
diff --git a/yarn.lock b/yarn.lock
index c195e1a..d047e8f 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3014,10 +3014,10 @@ tuf-js@^3.0.1:
     debug "^4.4.1"
     make-fetch-happen "^14.0.3"
 
-typescript@~5.8.0:
-  version "5.8.3"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-5.8.3.tgz#92f8a3e5e3cf497356f4178c34cd65a7f5e8440e"
-  integrity sha512-p1diW6TqL9L07nNxvRMM7hMMw4c5XOo/1ibL4aAIGmSAt9slTE1Xgw5KWuof2uTOvCg9BY7ZRi+GaF+7sfgPeQ==
+typescript@^5.9.2:
+  version "5.9.2"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-5.9.2.tgz#d93450cddec5154a2d5cabe3b8102b83316fb2a6"
+  integrity sha512-CWBzXQrc/qOkhidw1OzBTQuYRbfyxDXJMVJ1XNwUHGROVmuaeiEm3OslpZ1RV96d7SKKjZKrSJu3+t/xlw3R9A==
 
 undici-types@~6.21.0:
   version "6.21.0"