diff --git a/packages/eas-cli/src/utils/json.ts b/packages/eas-cli/src/utils/json.ts
index 4f66f14ebc..68ed90e19e 100644
--- a/packages/eas-cli/src/utils/json.ts
+++ b/packages/eas-cli/src/utils/json.ts
@@ -33,6 +33,8 @@ function sanitizeValue(value: any): unknown {
       }
     });
     return result;
+  } else if (value && typeof value === 'string') {
+    return JSON.stringify(value);
   } else {
     return value;
   }