diff --git a/spacy/lang/ja/__init__.py b/spacy/lang/ja/__init__.py
index 39a3a3385..daea9b8d6 100644
--- a/spacy/lang/ja/__init__.py
+++ b/spacy/lang/ja/__init__.py
@@ -9,6 +9,7 @@ from .tag_map import TAG_MAP
 from ...attrs import LANG
 from ...language import Language
 from ...tokens import Doc, Token
+from ...compat import copy_reg
 from ...util import DummyTokenizer
 
 
@@ -107,4 +108,11 @@ class Japanese(Language):
         return self.tokenizer(text)
 
 
+def pickle_japanese(instance):
+    return Japanese, tuple()
+
+
+copy_reg.pickle(Japanese, pickle_japanese)
+
+
 __all__ = ["Japanese"]