diff --git a/cytoolz/compatibility.py b/cytoolz/compatibility.py
deleted file mode 100644
index 28bef91..0000000
--- a/cytoolz/compatibility.py
+++ /dev/null
@@ -1,30 +0,0 @@
-import warnings
-warnings.warn("The toolz.compatibility module is no longer "
-              "needed in Python 3 and has been deprecated. Please "
-              "import these utilities directly from the standard library. "
-              "This module will be removed in a future release.",
-              category=DeprecationWarning, stacklevel=2)
-
-import operator
-import sys
-
-PY3 = sys.version_info[0] > 2
-PY34 = sys.version_info[0] == 3 and sys.version_info[1] == 4
-PYPY = hasattr(sys, 'pypy_version_info') and PY3
-
-__all__ = ('map', 'filter', 'range', 'zip', 'reduce', 'zip_longest',
-           'iteritems', 'iterkeys', 'itervalues', 'filterfalse',
-           'PY3', 'PY34', 'PYPY')
-
-
-map = map
-filter = filter
-range = range
-zip = zip
-from functools import reduce
-from itertools import zip_longest
-from itertools import filterfalse
-iteritems = operator.methodcaller('items')
-iterkeys = operator.methodcaller('keys')
-itervalues = operator.methodcaller('values')
-from collections.abc import Sequence
diff --git a/cytoolz/tests/test_compatibility.py b/cytoolz/tests/test_compatibility.py
deleted file mode 100644
index fe3768a..0000000
--- a/cytoolz/tests/test_compatibility.py
+++ /dev/null
@@ -1,9 +0,0 @@
-import pytest
-import importlib
-
-def test_compat_warn():
-    with pytest.warns(DeprecationWarning):
-        # something else is importing this,
-        import cytoolz.compatibility
-        # reload to be sure we warn
-        importlib.reload(cytoolz.compatibility)
diff --git a/pyproject.toml b/pyproject.toml
index cfb78d1..012a405 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -104,5 +104,4 @@ addopts = [
 log_cli_level = "info"
 filterwarnings = [
   "error",
-  "ignore:The toolz.compatibility module is no longer needed:DeprecationWarning:",
 ]