diff --git a/scrapy/dupefilter.py b/scrapy/dupefilter.py
new file mode 100644
index 000000000..232d96288
--- /dev/null
+++ b/scrapy/dupefilter.py
@@ -0,0 +1,7 @@
+import warnings
+from scrapy.exceptions import ScrapyDeprecationWarning
+warnings.warn("Module `scrapy.dupefilter` is deprecated, "
+              "use `scrapy.dupefilters` instead",
+              ScrapyDeprecationWarning, stacklevel=2)
+
+from scrapy.dupefilters import *