diff --git a/src/builder/parsers/csv/index.js b/src/builder/parsers/csv/index.js
index c378661..5cd0976 100644
--- a/src/builder/parsers/csv/index.js
+++ b/src/builder/parsers/csv/index.js
@@ -6,7 +6,7 @@ export default class Csv {
   }
 
   async toJSON (file) {
-    const body = await csv({ output: 'json', ...this.options }).fromString(file)
+    const body = await csv({ ...this.options, output: 'json' }).fromString(file)
 
     return {
       body
diff --git a/src/builder/parsers/json/index.js b/src/builder/parsers/json/index.js
index f5abab6..3bf96b3 100644
--- a/src/builder/parsers/json/index.js
+++ b/src/builder/parsers/json/index.js
@@ -6,6 +6,6 @@ export default class Json {
   }
 
   toJSON(file) {
-    return destr(file, this.options)
+    return destr(file, { ...this.options, strict: true })
   }
 }