diff --git a/graphene/contrib/django/converter.py b/graphene/contrib/django/converter.py
index 760fee5c..61058145 100644
--- a/graphene/contrib/django/converter.py
+++ b/graphene/contrib/django/converter.py
@@ -60,6 +60,7 @@ def _(field):
     return BooleanField(description=field.help_text)
 
 
+@convert_django_field.register(models.DecimalField)
 @convert_django_field.register(models.FloatField)
 def _(field):
     return FloatField(description=field.help_text)