diff --git a/HISTORY.rst b/HISTORY.rst
index 189a249..68c3a2e 100644
--- a/HISTORY.rst
+++ b/HISTORY.rst
@@ -3,6 +3,12 @@
 History
 -------
 
+0.3.9 (2018-11-12)
+~~~~~~~~~~~~~~~~~~
+
+* Adding ``iin`` form field overwrite for SQLAlchemy as otherwise by default
+  ``iin`` lookup is not validated correctly.
+
 0.3.8 (2018-08-08)
 ~~~~~~~~~~~~~~~~~~
 
diff --git a/setup.py b/setup.py
index 86c6266..fecda12 100644
--- a/setup.py
+++ b/setup.py
@@ -18,14 +18,11 @@ def read(fname):
 licence = read('LICENSE.rst')
 readme = read('README.rst')
 
-requirements = read('requirements.txt').splitlines() + [
-    'setuptools',
-]
+req = read('requirements.txt').splitlines()
+dev_req = read('requirements-dev.txt').splitlines()[1:]
 
-test_requirements = (
-    read('requirements.txt').splitlines() +
-    read('requirements-dev.txt').splitlines()[1:]
-)
+requirements = req + ['setuptools']
+test_requirements = req + dev_req
 
 setup(
     name='django-url-filter',
diff --git a/url_filter/__init__.py b/url_filter/__init__.py
index de10cd1..c98f4f8 100644
--- a/url_filter/__init__.py
+++ b/url_filter/__init__.py
@@ -4,4 +4,4 @@
 
 __author__ = 'Miroslav Shubernetskiy'
 __email__ = 'miroslav@miki725.com'
-__version__ = '0.3.8'
+__version__ = '0.3.9'
diff --git a/url_filter/filters.py b/url_filter/filters.py
index 9903748..0b45330 100644
--- a/url_filter/filters.py
+++ b/url_filter/filters.py
@@ -16,6 +16,7 @@
 
 MANY_LOOKUP_FIELD_OVERWRITES = {
     'in': lambda **kwargs: MultipleValuesField(min_values=1, **kwargs),
+    'iin': lambda **kwargs: MultipleValuesField(min_values=1, **kwargs),
     'range': lambda **kwargs: MultipleValuesField(min_values=2, max_values=2, **dict_pop('all_valid', kwargs)),
 }