diff --git a/.gitignore b/.gitignore
index f755b76..b1b0ac6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 /attrs-16.0.0.tar.gz
 /attrs-16.1.0.tar.gz
 /attrs-16.3.0.tar.gz
+/attrs-17.4.0.tar.gz
diff --git a/python-attrs.spec b/python-attrs.spec
index 465afe2..cbce9e7 100644
--- a/python-attrs.spec
+++ b/python-attrs.spec
@@ -1,12 +1,12 @@
 %global modname attrs
 
 Name:           python-attrs
-Version:        16.3.0
-Release:        3%{?dist}
+Version:        17.4.0
+Release:        1%{?dist}
 Summary:        Python attributes without boilerplate
 
 License:        MIT
-URL:            https://attrs.readthedocs.io/
+URL:            http://www.attrs.org/
 BuildArch:      noarch
 Source0:        https://github.com/hynek/%{modname}/archive/%{version}/%{modname}-%{version}.tar.gz
 
@@ -84,6 +84,9 @@ PYTHONPATH=%{buildroot}/%{python3_sitelib} py.test-3 -v
 %{python3_sitelib}/*
 
 %changelog
+* Thu Jan 11 2018 Eric Smith <brouhaha@fedoraproject.org> 17.4.0-1
+- Updated to latest upstream.
+
 * Thu Jul 27 2017 Fedora Release Engineering <releng@fedoraproject.org> - 16.3.0-3
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_27_Mass_Rebuild
 
diff --git a/sources b/sources
index 71139ab..80a7283 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (attrs-16.3.0.tar.gz) = 29aea8938ed96d8b07542ebf15eb9cac212a0e63190d60f9078c6e5182cf47d11bf5508cff201a7b9e7951a13f0f5cc8a2909be4b1ef0bd7eccebeb4fac26103
+SHA512 (attrs-17.4.0.tar.gz) = 14a512009cefbadc66972380f3beeb80e28daebeef467838c3506fd33a65e555666434a2d8f7294291b431e8b787aea370e267045f30a2253463e79d0e6caa3a