diff --git a/spacy/compat.py b/spacy/compat.py
index 3ed777154..e6b7c066b 100644
--- a/spacy/compat.py
+++ b/spacy/compat.py
@@ -51,7 +51,7 @@ if is_python2:
     unicode_ = unicode
     basestring_ = basestring
     input_ = raw_input
-    json_dumps = lambda data: ujson.dumps(data, indent=2).decode('utf8')
+    json_dumps = lambda data: ujson.dumps(data, indent=2, escape_forward_slashes=False).decode('utf8')
     path2str = lambda path: str(path).decode('utf8')
 
 elif is_python3:
@@ -60,7 +60,7 @@ elif is_python3:
     unicode_ = str
     basestring_ = str
     input_ = input
-    json_dumps = lambda data: ujson.dumps(data, indent=2)
+    json_dumps = lambda data: ujson.dumps(data, indent=2, escape_forward_slashes=False)
     path2str = lambda path: str(path)