diff --git a/.abf.yml b/.abf.yml
index 51c54fa..80fab9c 100644
--- a/.abf.yml
+++ b/.abf.yml
@@ -1,2 +1,4 @@
-sources:
+removed_sources:
   cython-0.25.2.tar.gz: 3ddd844d06f8e8df46058e0d8fdf8056dcbd3116
+sources:
+  cython-0.27.3.tar.gz: 9a2b8948ba1f7b5096c758571e20d6cb7550d97e
diff --git a/python-cython.spec b/python-cython.spec
index a65d19a..d0e1e1e 100644
--- a/python-cython.spec
+++ b/python-cython.spec
@@ -9,7 +9,7 @@ Name:           python-cython
 License:        Apache License
 Group:          Development/Python
 Url:            http://www.cython.org
-Version:        0.25.2
+Version:        0.27.3
 Release:        1
 Source0:        https://github.com/cython/cython/archive/%{version}%{?rctag:%{rctag}}/%{tarname}-%{version}%{?rctag:%{rctag}}.tar.gz
 Source100:      %{name}.rpmlintrc