diff --git a/bz1886074-4-fencing-source_env-dont-process-empty-lines.patch b/bz1886074-4-fencing-source_env-dont-process-empty-lines.patch
new file mode 100644
index 0000000..8803895
--- /dev/null
+++ b/bz1886074-4-fencing-source_env-dont-process-empty-lines.patch
@@ -0,0 +1,22 @@
+From fbca33a536413565108374dd4ed3237b6f7896bd Mon Sep 17 00:00:00 2001
+From: Oyvind Albrigtsen <oalbrigt@redhat.com>
+Date: Mon, 15 Aug 2022 10:40:19 +0200
+Subject: [PATCH] fencing: source_env(): dont process empty lines
+
+---
+ lib/fencing.py.py | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/lib/fencing.py.py b/lib/fencing.py.py
+index fc3679e33..940bd01d1 100644
+--- a/lib/fencing.py.py
++++ b/lib/fencing.py.py
+@@ -1264,7 +1264,7 @@ def source_env(env_file):
+                           executable="/bin/sh")
+     # replace env
+     os.environ.clear()
+-    os.environ.update(line.partition('=')[::2] for line in output.decode("utf-8").split('\0'))
++    os.environ.update(line.partition('=')[::2] for line in output.decode("utf-8").split('\0') if not re.match("^\s*$", line))
+ 
+ # Convert array of format [[key1, value1], [key2, value2], ... [keyN, valueN]] to dict, where key is
+ # in format a.b.c.d...z and returned dict has key only z
diff --git a/fence-agents.spec b/fence-agents.spec
index fa57032..c8be7fb 100644
--- a/fence-agents.spec
+++ b/fence-agents.spec
@@ -87,7 +87,7 @@
 Name: fence-agents
 Summary: Set of unified programs capable of host isolation ("fencing")
 Version: 4.2.1
-Release: 100%{?alphatag:.%{alphatag}}%{?dist}
+Release: 101%{?alphatag:.%{alphatag}}%{?dist}
 License: GPLv2+ and LGPLv2+
 Group: System Environment/Base
 URL: https://github.com/ClusterLabs/fence-agents
@@ -292,6 +292,7 @@ Patch117: bz2072421-2-fence_zvmip-connect-error.patch
 Patch118: bz2091826-fence_ibm_vpc-add-proxy-support.patch
 Patch119: bz2092921-fence_ibm_powervs-proxy-private-api-servers.patch
 Patch120: bz2033671-fence_sbd-improve-error-handling.patch
+Patch121: bz1886074-4-fencing-source_env-dont-process-empty-lines.patch
 
 %if 0%{?fedora} || 0%{?rhel} > 7
 %global supportedagents amt_ws apc apc_snmp bladecenter brocade cisco_mds cisco_ucs compute drac5 eaton_snmp emerson eps evacuate hds_cb hpblade ibmblade ibm_powervs ibm_vpc ifmib ilo ilo_moonshot ilo_mp ilo_ssh intelmodular ipdu ipmilan kdump kubevirt lpar mpath redfish rhevm rsa rsb sbd scsi vmware_rest vmware_soap wti
@@ -490,6 +491,7 @@ BuildRequires: python3-google-api-client python3-pip python3-wheel python3-jinja
 %patch118 -p1
 %patch119 -p1
 %patch120 -p1
+%patch121 -p1
 
 # prevent compilation of something that won't get used anyway
 sed -i.orig 's|FENCE_ZVM=1|FENCE_ZVM=0|' configure.ac
@@ -1514,6 +1516,10 @@ Fence agent for IBM z/VM over IP.
 %endif
 
 %changelog
+* Mon Aug 15 2022 Oyvind Albrigtsen <oalbrigt@redhat.com> - 4.2.1-101
+- fence_openstack: new fence agent
+  Resolves: rhbz#1886074
+
 * Mon Aug  1 2022 Oyvind Albrigtsen <oalbrigt@redhat.com> - 4.2.1-100
 - fence_sbd: improve error handling
   Resolves: rhbz#2033671
@@ -1549,10 +1555,6 @@ Fence agent for IBM z/VM over IP.
 - fence_ibm_vpc: new fence agent
   Resolves: rhbz#1728203
 
-* Mon Apr 25 2022 Oyvind Albrigtsen <oalbrigt@redhat.com> - 4.2.1-91
-- fence_openstack: new fence agent
-  Resolves: rhbz#1886074
-
 * Fri Feb 11 2022 Oyvind Albrigtsen <oalbrigt@redhat.com> - 4.2.1-88
 - fence_aws: upgrade botocore to fix IMDSv2 support
   Resolves: rhbz#2048857