diff --git a/bison.spec b/bison.spec
index 23202b9..c698511 100644
--- a/bison.spec
+++ b/bison.spec
@@ -1,6 +1,6 @@
 Name:           bison
 Version:        3.5
-Release:        1
+Release:        2
 Summary:        A GNU general-purpose parser generator
 License:        GPLv3+
 URL:            http://www.gnu.org/software/bison/
@@ -72,6 +72,7 @@ fi
 
 %files help
 %defattr(-,root,root)
+%exclude %{_mandir}/man1/yacc.1.gz
 %{_docdir}/bison/{NEWS,THANKS,TODO}
 %{_mandir}/man1/*
 %{_infodir}/bison*
@@ -88,6 +89,12 @@ fi
 %{_datadir}/locale/*/LC_MESSAGES/bison-gnulib.mo
 
 %changelog
+* Sat Mar 21 2020 openEuler Buildteam <buildteam@openeuler.org> 3.5-2
+- Type:enhancement
+- ID:NA
+- SUG:NA
+- DESC:exclude yacc.gz from help
+
 * Tue Jan 7 2020 openEuler Buildteam <buildteam@openeuler.org> 3.5-1
 - Type:enhancement
 - ID:NA