diff --git a/opensp.spec b/opensp.spec
index 088f08d..5a992f4 100644
--- a/opensp.spec
+++ b/opensp.spec
@@ -1,7 +1,7 @@
 Summary: SGML and XML parser
 Name: opensp
 Version: 1.5.2
-Release: 35%{?dist}
+Release: 36%{?dist}
 Requires: sgml-common >= 0.5
 Provides: bundled(gettext) = 0.14.5
 URL: http://openjade.sourceforge.net/
@@ -12,6 +12,7 @@ Patch2: opensp-sigsegv.patch
 Patch3: opensp-manpage.patch
 License: MIT
 
+BuildRequires: make
 BuildRequires:  gcc-c++
 
 %if ! 0%{?_module_build}
@@ -114,6 +115,9 @@ make check || : # TODO: failures as of 1.5.2 :(
 
 
 %changelog
+* Tue Jan 26 2021 Fedora Release Engineering <releng@fedoraproject.org> - 1.5.2-36
+- Rebuilt for https://fedoraproject.org/wiki/Fedora_34_Mass_Rebuild
+
 * Tue Jul 28 2020 Fedora Release Engineering <releng@fedoraproject.org> - 1.5.2-35
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_33_Mass_Rebuild