diff --git a/.gitignore b/.gitignore
index a14fa4f..65c9ee6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -37,3 +37,4 @@
 /dnf-plugins-extras-4.0.10.tar.gz
 /dnf-plugins-extras-4.0.12.tar.gz
 /dnf-plugins-extras-4.0.13.tar.gz
+/dnf-plugins-extras-4.0.15.tar.gz
diff --git a/dnf-plugins-extras.spec b/dnf-plugins-extras.spec
index 51698ad..ad7c471 100644
--- a/dnf-plugins-extras.spec
+++ b/dnf-plugins-extras.spec
@@ -4,8 +4,8 @@
 %undefine __cmake_in_source_build
 
 Name:           dnf-plugins-extras
-Version:        4.0.13
-Release:        5%{?dist}
+Version:        4.0.15
+Release:        1%{?dist}
 Summary:        Extras Plugins for DNF
 License:        GPLv2+
 URL:            https://github.com/rpm-software-management/%{name}
@@ -104,8 +104,8 @@ BuildRequires:  python3-systemd
 %{?systemd_requires}
 
 %description -n python3-dnf-plugin-system-upgrade
-System Upgrade Plugin for DNF, Python 3 version. Enables offline system upgrades
-using the "dnf system-upgrade" command.
+System Upgrade Plugin for DNF, Python 3 version. Enables offline system upgrades and distrosync
+using three commands: ``system-upgrade``, ``offline-upgrade``, and ``offline-distrosync``.
 
 %package -n python3-dnf-plugin-tracer
 Summary:        Tracer Plugin for DNF
@@ -164,6 +164,9 @@ pushd %{buildroot}%{_unitdir}/system-update.target.wants/
   ln -sr ../dnf-system-upgrade.service
 popd
 
+ln -sf %{_mandir}/man8/dnf-system-upgrade.8.gz %{buildroot}%{_mandir}/man8/dnf-offline-upgrade.8.gz
+ln -sf %{_mandir}/man8/dnf-system-upgrade.8.gz %{buildroot}%{_mandir}/man8/dnf-offline-distrosync.8.gz
+
 %find_lang %{name}
 
 %check
@@ -198,6 +201,8 @@ PYTHONPATH="%{buildroot}%{python3_sitelib}:%{buildroot}%{python3_sitelib}/dnf-pl
 %{python3_sitelib}/dnf-plugins/system_upgrade.py
 %{python3_sitelib}/dnf-plugins/__pycache__/system_upgrade.*
 %{_mandir}/man8/dnf-system-upgrade.*
+%{_mandir}/man8/dnf-offline-upgrade.8.gz
+%{_mandir}/man8/dnf-offline-distrosync.8.gz
 
 %files -n python3-dnf-plugin-tracer
 %{python3_sitelib}/dnf-plugins/tracer.*
@@ -216,6 +221,11 @@ PYTHONPATH="%{buildroot}%{python3_sitelib}:%{buildroot}%{python3_sitelib}/dnf-pl
 %{_mandir}/man8/dnf-showvars.*
 
 %changelog
+* Tue Jun 15 2021 Pavla Kratochvilova <pkratoch@redhat.com> - 4.0.15-1
+- Update to 4.0.15
+- Add symlink for man pages of offline-upgrade and offline-distrosync commands (RhBug:1917378)
+- system-upgrade: Handle empty transaction on download (RhBug:1917639)
+
 * Fri Jun 04 2021 Python Maint <python-maint@redhat.com> - 4.0.13-5
 - Rebuilt for Python 3.10
 
diff --git a/sources b/sources
index bb452cc..012dab2 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (dnf-plugins-extras-4.0.13.tar.gz) = 340c6c11e95fac328299a091f20931e4e7d970c343e23ee28eaa9a4ad19729f08ef67eb5a732ec68bed36f3819114c150f1acaa994b445f26b008309cf11df56
+SHA512 (dnf-plugins-extras-4.0.15.tar.gz) = 758b29282eca16485a190d7b9f8039e8d691743889aa95b9b5a52342ee15cdead0860d05b8369dad31df9bd0892c46024d273f4305d69613ec60ea2ec2dacca8