diff --git a/python-pysb.spec b/python-pysb.spec
index 0c123de..7e87eb6 100644
--- a/python-pysb.spec
+++ b/python-pysb.spec
@@ -6,7 +6,7 @@
 
 Name:           python-pysb
 Version:        1.9.1
-Release:        3%{?dist}
+Release:        4%{?dist}
 Summary:        Rule-based modeling of biochemical systems as Python programs
 License:        BSD
 URL:            http://pysb.org/
@@ -102,6 +102,9 @@ chmod +x %{buildroot}/%{python3_sitelib}/pysb/tools/[a-z]*.py
 %endif
 
 %changelog
+* Thu Oct 03 2019 Miro Hrončok <mhroncok@redhat.com> - 1.9.1-4
+- Rebuilt for Python 3.8.0rc1 (#1748018)
+
 * Mon Aug 19 2019 Miro Hrončok <mhroncok@redhat.com> - 1.9.1-3
 - Rebuilt for Python 3.8