diff --git a/fltk.spec b/fltk.spec
index 6a37b9146c0eb4d511b2a4e9b4be8691c04cf7c8..3053ce5492c45d6908eeb52ac60e0aa83ad8fc86 100644
--- a/fltk.spec
+++ b/fltk.spec
@@ -2,7 +2,7 @@
 
 Name:           fltk
 Version:        1.3.5
-Release:        2
+Release:        3
 Summary:        C++ user interface toolkit
 License:        LGPLv2+ with exceptions
 URL:            http://www.fltk.org/
@@ -17,7 +17,7 @@ Obsoletes:      %{name}-fluid < %{version}-%{release}
 
 BuildRequires:  gcc-c++ desktop-file-utils libjpeg-devel pkgconfig(libpng) pkgconfig(gl) pkgconfig(glu) pkgconfig(ice)
 BuildRequires:  pkgconfig(sm) pkgconfig(xext) pkgconfig(xinerama) pkgconfig(xft) pkgconfig(xt) pkgconfig(x11)
-BuildRequires:  pkgconfig(xcursor) pkgconfig(xproto) xorg-x11-utils zlib-devel autoconf
+BuildRequires:  pkgconfig(xcursor) pkgconfig(xproto) xorg-x11-utils zlib-devel autoconf groff
 
 %description
 FLTK (pronounced "fulltick") is a cross-platform C++ GUI toolkit.It provides modern GUI functionality without
@@ -113,6 +113,9 @@ desktop-file-validate $RPM_BUILD_ROOT%{_datadir}/applications/fluid.desktop
 %{_mandir}/man1/fluid.1*
 
 %changelog
+* Tue Aug 31 2021 liuyumeng <liuyumeng5@huawei.com> - 1.3.5-2
+- add groff buildrequires resolve obs build failed
+
 * Thu Jul 20 2021 liuyumeng <liuyumeng5@huawei.com> - 1.3.5-2
 - delete gdb in buildrequires