diff --git a/0005-libisns-remove-sighold-and-sigrelse.patch b/0005-libisns-remove-sighold-and-sigrelse.patch
new file mode 100644
index 0000000000000000000000000000000000000000..d1d2dd0866376e33ef403d0c9f7dde170d31d770
--- /dev/null
+++ b/0005-libisns-remove-sighold-and-sigrelse.patch
@@ -0,0 +1,44 @@
+From e7dac76ce61039fefa58985c955afccb60dabe87 Mon Sep 17 00:00:00 2001
+From: Rosen Penev <rosenp@gmail.com>
+Date: Wed, 29 Apr 2020 15:55:55 -0700
+Subject: [PATCH] libisns: remove sighold and sigrelse
+
+The man page says that these are deprecated. Use sugprocmask as a replacement.
+---
+ include/libisns/util.h | 16 ++++++++++++----
+ 1 file changed, 12 insertions(+), 4 deletions(-)
+
+diff --git a/include/libisns/util.h b/include/libisns/util.h
+index e5ed037..f1b97f0 100644
+--- a/include/libisns/util.h
++++ b/include/libisns/util.h
+@@ -41,14 +41,22 @@ char *		print_size(unsigned long);
+  */
+ static inline void signals_hold(void)
+ {
+-	sighold(SIGTERM);
+-	sighold(SIGINT);
++	sigset_t s;
++
++	sigemptyset(&s);
++	sigaddset(&s, SIGTERM);
++	sigaddset(&s, SIGINT);
++	sigprocmask(SIG_BLOCK, &s, 0);
+ }
+ 
+ static inline void signals_release(void)
+ {
+-	sigrelse(SIGTERM);
+-	sigrelse(SIGINT);
++	sigset_t s;
++
++	sigemptyset(&s);
++	sigaddset(&s, SIGTERM);
++	sigaddset(&s, SIGINT);
++	sigprocmask(SIG_UNBLOCK, &s, 0);
+ }
+ 
+ /*
+-- 
+1.8.3.1
+
diff --git a/open-isns.spec b/open-isns.spec
index 39b3057651950d173efadf566b28d6d2771ee7e9..d28f1d9ee91fbd2e9f4ef16c8d6de787af774a78 100644
--- a/open-isns.spec
+++ b/open-isns.spec
@@ -1,6 +1,6 @@
 Name:           open-isns
 Version:        0.100
-Release:        4
+Release:        5
 Summary:        The iSNS server and client programs
 License:        LGPLv2+
 URL:            https://www.github.com/open-iscsi/open-isns
@@ -10,6 +10,7 @@ Patch1:      0001-Fix-the-issue-of-ignoring-the-return-value.patch
 Patch2:      0002-Fix-compiler-issue-when-not-in-security-mode.patch
 Patch3:      0003-Fix-586-compile-issue-and-remove-Werror.patch
 Patch4:      0004-Do-not-install-isnsd.socket-in-isnsd.service.patch
+Patch5:      0005-libisns-remove-sighold-and-sigrelse.patch
 
 BuildRequires:  gcc git systemd automake autoconf make
 BuildRequires:  openssl-devel systemd-devel
@@ -97,6 +98,9 @@ install -p -m 644 isnsd.service %{buildroot}%{_unitdir}/isnsd.service
 %{_mandir}/man8/*
 
 %changelog
+* Wed Jun 30 2021 Wenchao Hao<haowenchao@huawei.com> - 0.100-5
+- libisns: remove sighold and sigrelse
+
 * Thu Apr 4 2021 Wenchao Hao<haowenchao@huawei.com> - 0.100-4
 - Do not install isnsd.socket in isnsd.service