diff --git a/README.md b/README.md
index cf68d7f..e0987ec 100644
--- a/README.md
+++ b/README.md
@@ -58,6 +58,8 @@ Basic usage:
 
 `smtp_debug`: activate smtplib's debug output which always goes to stderr; defaults to `False`
 
+`address_types`: The IP address types to use. pass a `frozenset` if you want to change the default `frozenset([IPv6Address, IPv4Address])`. Useful when you only deliver emails through one interface, but you have dual stack. For an explanation, see [this issue](https://gitea.ksol.io/karolyi/py3-validate-email/issues/94)
+
 ### Result
 
 The function `validate_email()` returns the following results:
diff --git a/setup.py b/setup.py
index bb0246e..b8e4630 100644
--- a/setup.py
+++ b/setup.py
@@ -57,9 +57,9 @@ class BuildPyCommand(build_py):
 
 setup(
     name='py3-validate-email',
-    version='1.0.5',
+    version='1.0.6',
     packages=find_packages(exclude=['tests']),
-    install_requires=['dnspython~=2.1', 'idna~=3.0', 'filelock~=3.0'],
+    install_requires=['dnspython~=2.2', 'idna~=3.3', 'filelock~=3.7'],
     author='László Károlyi',
     author_email='laszlo@karolyi.hu',
     description=(