diff --git a/0001-build-sys-Add-Wno-deprecated-declarations-to-default.patch b/0001-build-sys-Add-Wno-deprecated-declarations-to-default.patch
new file mode 100644
index 0000000..21f4be7
--- /dev/null
+++ b/0001-build-sys-Add-Wno-deprecated-declarations-to-default.patch
@@ -0,0 +1,29 @@
+From a0ca7c328f1c3c6a417973d194b41d06ab7b0802 Mon Sep 17 00:00:00 2001
+From: Stefan Berger <stefanb@linux.ibm.com>
+Date: Wed, 15 Sep 2021 11:34:02 -0400
+Subject: [PATCH] build-sys: Add -Wno-deprecated-declarations to default CFLAGS
+ (OSSL 3)
+
+To be able to build with OpenSSL 3.0 we need to added
+-Wno-deprecated-declarations to the default CFLAGS.
+
+Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
+---
+ configure.ac | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/configure.ac b/configure.ac
+index 1e0710c..7da1b47 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -461,6 +461,7 @@ AC_SUBST([TSS_GROUP])
+ CFLAGS="$CFLAGS -Wreturn-type -Wsign-compare -Wswitch-enum"
+ CFLAGS="$CFLAGS -Wmissing-prototypes -Wall -Werror"
+ CFLAGS="$CFLAGS -Wformat -Wformat-security"
++CFLAGS="$CFLAGS -Wno-deprecated-declarations"
+ CFLAGS="$CFLAGS $GNUTLS_CFLAGS $COVERAGE_CFLAGS"
+ 
+ LDFLAGS="$LDFLAGS $COVERAGE_LDFLAGS"
+-- 
+2.31.1
+
diff --git a/swtpm.spec b/swtpm.spec
index 40a3f2d..f417ca3 100644
--- a/swtpm.spec
+++ b/swtpm.spec
@@ -12,11 +12,13 @@
 Summary: TPM Emulator
 Name:           swtpm
 Version:        0.6.0
-Release:        4.%{gitdate}git%{gitshortcommit}%{?dist}
+Release:        5.%{gitdate}git%{gitshortcommit}%{?dist}
 License:        BSD
 Url:            http://github.com/stefanberger/swtpm
 Source0:        %{url}/archive/%{gitcommit}/%{name}-%{gitshortcommit}.tar.gz
 
+Patch0001:      0001-build-sys-Add-Wno-deprecated-declarations-to-default.patch
+
 BuildRequires: make
 BuildRequires:  git-core
 BuildRequires:  automake
@@ -87,6 +89,7 @@ Tools for creating a local CA based on a pkcs11 device
 
 %prep
 %autosetup -S git -n %{name}-%{gitcommit} -p1
+%patch0001 -p1
 
 %build
 
@@ -178,6 +181,9 @@ fi
 %{_datadir}/swtpm/swtpm-create-tpmca
 
 %changelog
+* Thu Sep 16 2021 Stefan Berger <stefanb@linux.ibm.com.> - 0.6.0-5.20210607gitea627b3
+- Applied patch with -Wno-deprecated-declarations for build with OpenSSL 3.0.0
+
 * Tue Sep 14 2021 Sahana Prasad <sahana@redhat.com> - 0.6.0-4.20210607gitea627b3
 - Rebuilt with OpenSSL 3.0.0