diff --git a/package-lock.json b/package-lock.json
index d27c3d9..a9549b2 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -21,7 +21,7 @@
         "@redocly/cli": "^1.25.2",
         "@types/better-sqlite3": "^7.6.11",
         "@types/node": "^22.5.5",
-        "typescript": "^5.5.4"
+        "typescript": "^5.6.2"
       }
     },
     "node_modules/@babel/runtime": {
@@ -4045,9 +4045,9 @@
       }
     },
     "node_modules/typescript": {
-      "version": "5.5.4",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.5.4.tgz",
-      "integrity": "sha512-Mtq29sKDAEYP7aljRgtPOpTvOfbwRWlS6dPRzwjdE+C0R4brX/GUyhHSecbHMFLNBLcJIPt9nl9yG5TZ1weH+Q==",
+      "version": "5.6.2",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.6.2.tgz",
+      "integrity": "sha512-NW8ByodCSNCwZeghjN3o+JX5OFH0Ojg6sadjEKY4huZ52TqbJTJnDo5+Tw98lSy63NZvi4n+ez5m2u5d4PkZyw==",
       "dev": true,
       "bin": {
         "tsc": "bin/tsc",
diff --git a/package.json b/package.json
index 8d64172..27e38e9 100644
--- a/package.json
+++ b/package.json
@@ -15,7 +15,7 @@
     "@redocly/cli": "^1.25.2",
     "@types/better-sqlite3": "^7.6.11",
     "@types/node": "^22.5.5",
-    "typescript": "^5.5.4"
+    "typescript": "^5.6.2"
   },
   "dependencies": {
     "argon2": "^0.41.1",
diff --git a/src/resource/Artist.ts b/src/resource/Artist.ts
index c246d86..f75e076 100644
--- a/src/resource/Artist.ts
+++ b/src/resource/Artist.ts
@@ -65,8 +65,11 @@ namespace Artist {
             const iterations = Math.min(ids.size, 100);
             const iterator = ids.values();
             for (let i = 0; i < iterations; ++i) {
-                const artist = this.get(iterator.next().value)!;
-                if (artist !== null) artists.push(artist);
+                const id = iterator.next().value;
+                if (id === undefined) continue;
+                const artist = this.get(id)!;
+                if (artist === null) continue;
+                artists.push(artist);
             }
             return artists;
         }