diff --git a/package-lock.json b/package-lock.json
index 5bf6530..e2c030d 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -235,9 +235,9 @@
             }
         },
         "ttypescript": {
-            "version": "1.5.12",
-            "resolved": "https://registry.npmjs.org/ttypescript/-/ttypescript-1.5.12.tgz",
-            "integrity": "sha512-1ojRyJvpnmgN9kIHmUnQPlEV1gq+VVsxVYjk/NfvMlHSmYxjK5hEvOOU2MQASrbekTUiUM7pR/nXeCc8bzvMOQ==",
+            "version": "1.5.15",
+            "resolved": "https://registry.npmjs.org/ttypescript/-/ttypescript-1.5.15.tgz",
+            "integrity": "sha512-48ykDNHzFnPMnv4hYX1P8Q84TvCZyL1QlFxeuxsuZ48X2+ameBgPenvmCkHJtoOSxpoWTWi8NcgNrRnVDOmfSg==",
             "dev": true,
             "requires": {
                 "resolve": ">=1.9.0"
diff --git a/package.json b/package.json
index 6a20a83..582b094 100644
--- a/package.json
+++ b/package.json
@@ -13,7 +13,7 @@
   },
   "devDependencies": {
     "ts-node": "^9.1.1",
-    "ttypescript": "^1.5.12",
+    "ttypescript": "^1.5.15",
     "typescript": "^4.2.4",
     "typescript-to-lua": "^0.42.0"
   }