diff --git a/package-lock.json b/package-lock.json
index 57670803..2fe90cc1 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -92,9 +92,9 @@
       }
     },
     "@tableau/tabextsandbox": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/@tableau/tabextsandbox/-/tabextsandbox-1.1.0.tgz",
-      "integrity": "sha512-uWo+JsyCHhBg2bNBt6Y47Drv1AM7CuOZ0veTy88tu+dMYTI3SApL0J/eWajJmSz9EAs+ZLxYzQLO0auTb2nnGw==",
+      "version": "1.2.1",
+      "resolved": "https://registry.npmjs.org/@tableau/tabextsandbox/-/tabextsandbox-1.2.1.tgz",
+      "integrity": "sha512-psZ8OVb1fcJvcQnSbZXW2LzDBivr5YYUTrt+6H8iiRepILmuC19HYvuPXTu2JFKliUD9fnVrsm/wRrMn6NhXrQ==",
       "dev": true,
       "requires": {
         "ejs": "^2.6.1",
diff --git a/package.json b/package.json
index 5cb7edef..3692fdc4 100644
--- a/package.json
+++ b/package.json
@@ -22,7 +22,7 @@
   },
   "devDependencies": {
     "@tableau/extensions-api-types": "1.6.0",
-    "@tableau/tabextsandbox": "^1.1.0",
+    "@tableau/tabextsandbox": "^1.2.1",
     "@types/jquery": "^3.3.29",
     "concurrently": "^6.2.1",
     "semistandard": "^11.0.0",