diff --git a/sources b/sources
index 69632ce..626e461 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (zeromq-4.3.5.tar.gz) = a71d48aa977ad8941c1609947d8db2679fc7a951e4cd0c3a1127ae026d883c11bd4203cf315de87f95f5031aec459a731aec34e5ce5b667b8d0559b157952541
+SHA512 (libzmq-4.3.4.tar.gz) = ad828b1ab5a87983285a6b44b08240816ed1c4e2c73306ab1a851bf80df1892b5e2f92064a49fbadc1f4c75043625ace77dd25b64d5d1c2a7d1d61cc916fba0b
diff --git a/zeromq-configure-c99.patch b/zeromq-configure-c99.patch
deleted file mode 100644
index 0bee83b..0000000
--- a/zeromq-configure-c99.patch
+++ /dev/null
@@ -1,37 +0,0 @@
-Build with -D_DEFAULT_SOURCE along with -std=c11
-    
-On its own, -std=c11 hides POSIX and other extensions from C headers
-such as <stdlib.h> when building against glibc. This causes the
-posix_memalign probe to fail incorrectly with compilers that do not
-accept implicit function declarations. _DEFAULT_SOURCE is ignored by
-most non-GNU/Linux systems or not relevant in this context, so there
-is no separate check for adding it.
-
-Submitted upstream: <https://github.com/zeromq/libzmq/pull/4635>
-
-diff --git a/CMakeLists.txt b/CMakeLists.txt
-index 68fb7251..f956f3fd 100644
---- a/CMakeLists.txt
-+++ b/CMakeLists.txt
-@@ -122,7 +122,7 @@ if (NOT MSVC)
-   if(NOT CMAKE_C_FLAGS MATCHES "-std=" AND NOT C_STANDARD AND NOT CMAKE_C_STANDARD)
-     check_c_compiler_flag("-std=c11" COMPILER_SUPPORTS_C11)
-     if(COMPILER_SUPPORTS_C11)
--      set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=c11")
-+      set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -D_DEFAULT_SOURCE -std=c11")
-     else()
-       set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=gnu99")
-     endif()
-diff --git a/configure.ac b/configure.ac
-index b9e13d4f..ffcc145b 100644
---- a/configure.ac
-+++ b/configure.ac
-@@ -66,7 +66,7 @@ ZMQ_ORIG_CXXFLAGS="${CXXFLAGS:-none}"
- 
- # Checks for programs.
- AC_PROG_CC
--AX_CHECK_COMPILE_FLAG([-std=c11], [CFLAGS+=" -std=c11"], [AC_PROG_CC_C99])
-+AX_CHECK_COMPILE_FLAG([-std=c11], [CFLAGS+=" -std=c11 -D_DEFAULT_SOURCE"], [AC_PROG_CC_C99])
- AC_PROG_CXX
- AX_CODE_COVERAGE
- AM_PROG_CC_C_O
diff --git a/zeromq.spec b/zeromq.spec
index a4f31f1..21a2c6d 100644
--- a/zeromq.spec
+++ b/zeromq.spec
@@ -2,16 +2,15 @@
 %bcond_without unwind
 
 Name:           zeromq
-Version:        4.3.5
-Release:        %autorelease
+Version:        4.3.4
+Release:        2%{?dist}
 Summary:        Software library for fast, message-based applications
 
-License:        MPL-2.0 AND BSD-3-Clause AND MIT
+License:        LGPLv3+
 URL:            https://zeromq.org
-Source0:        https://github.com/%{name}/libzmq/archive/v%{version}/%{name}-%{version}.tar.gz
-Patch1:         zeromq-configure-c99.patch
+Source0:        https://github.com/%{name}/libzmq/archive/v%{version}/libzmq-%{version}.tar.gz
 
-BuildRequires:  make
+BuildRequires: make
 BuildRequires:  autoconf
 BuildRequires:  automake
 BuildRequires:  gcc-c++
@@ -51,7 +50,7 @@ developing applications that use %{name}.
 
 
 %prep
-%autosetup -p1
+%autosetup -p1 -n libzmq-%{version}
 
 # Remove bundled code.
 rm -rf external/wepoll
@@ -68,7 +67,6 @@ autoreconf -fi
             --with-libgssapi_krb5 \
 %endif
             --with-libsodium \
-            --enable-drafts \
 %if %{with unwind}
             --enable-libunwind \
 %endif
@@ -86,7 +84,7 @@ rm %{buildroot}%{_libdir}/libzmq.la
 
 %check
 %ifarch s390x
-make check V=1 XFAIL_TESTS=tests/test_radio_dish || ( cat test-suite.log && exit 1 )
+make check V=1 || ( cat test-suite.log && exit 1 )
 %endif
 
 
@@ -95,7 +93,7 @@ make check V=1 XFAIL_TESTS=tests/test_radio_dish || ( cat test-suite.log && exit
 
 %files
 %doc README.md AUTHORS NEWS
-%license LICENSE
+%license COPYING COPYING.LESSER
 %{_bindir}/curve_keygen
 %{_libdir}/libzmq.so.5*
 %{_mandir}/man3/zmq_*
@@ -109,5 +107,10 @@ make check V=1 XFAIL_TESTS=tests/test_radio_dish || ( cat test-suite.log && exit
 
 
 %changelog
-%autochangelog
+* Tue Mar 07 2023 Ben Woodard <woodard@redhat.com> - 4.3.4-2
+- disable building with libunwind to fix C++ exceptions when a C applicaion loads
+  a module written in C++ #2175966
+
+* Thu Mar 03 2022 Fedora Release Engineering <releng@fedoraproject.org> - 4.3.4-1
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_36_Mass_Rebuild