diff --git a/additionals/json.py b/additionals/json.py
index a0e0d70..66c5185 100644
--- a/additionals/json.py
+++ b/additionals/json.py
@@ -14,8 +14,8 @@ def json_query(ctx, v, query):
 
 @as_filter
 @pass_context
-def json_dumps(ctx, v):
-  return json.dumps(v)
+def json_dumps(ctx, v, *, ensure_ascii=False, indent=None, sort_keys=False):
+  return json.dumps(v, ensure_ascii=ensure_ascii, indent=indent, sort_keys=sort_keys)
 
 
 @as_filter
diff --git a/testdata/default-example.j2 b/testdata/default-example.j2
index 7792b79..aa43c27 100644
--- a/testdata/default-example.j2
+++ b/testdata/default-example.j2
@@ -14,7 +14,7 @@
 {%- for url in (github | json_query('[*.url,*.*.url,*.*.*.url] | [] | [] | []')) %}
 * {{ url }}
 {%- endfor %}
-{{ 'test\n' | json_dumps }}
+{{ '日本語test\n' | json_dumps(ensure_ascii=True) }}
 {{ (github.event | json_dumps | json_loads).repository.name }}
 
 {{ github | to_nice_yaml }}