diff --git a/binutils-loongarch-support.patch b/binutils-loongarch-support.patch
index 9fdf38d9ab93b11545a7eed06e7709b86bb333c7..03c8b96a464c2f0e15295f59d4e82863dffabaf4 100644
--- a/binutils-loongarch-support.patch
+++ b/binutils-loongarch-support.patch
@@ -4401,16 +4401,13 @@ index 758f41dc..3ae74dab 100644
  
  diststuff: $(EXTRA_DIST) info
  
-@@ -521,6 +524,27 @@ rx-parse.h: rx-parse.c
+@@ -521,6 +524,24 @@ rx-parse.h: rx-parse.c
  rx-defs.h: ; @true
  $(srcdir)/config/rx-defs.h: ; @true
  
 +EXTRA_as_new_SOURCES += config/loongarch-parse.y
-+loongarch-parse.c: $(srcdir)/config/loongarch-parse.y
++loongarch-parse.c loongarch-parse.h: $(srcdir)/config/loongarch-parse.y
 +	$(SHELL) $(YLWRAP) $(srcdir)/config/loongarch-parse.y y.tab.c loongarch-parse.c y.tab.h loongarch-parse.h -- $(YACCCOMPILE) -d ;
-+loongarch-parse.h: loongarch-parse.c
-+loongarch-parse.h: ; @true
-+$(srcdir)/config/loongarch-parse.h: ; @true
 +
 +loongarch-lex.c: $(srcdir)/config/loongarch-lex.l
 +	$(SHELL) $(YLWRAP) $(srcdir)/config/loongarch-lex.l lex.yy.c loongarch-lex.c -- $(LEXCOMPILE)
@@ -4502,7 +4499,7 @@ index b55f2b88..d59a936a 100644
 +@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
 +@am__fastdepCC_FALSE@	$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o tc-loongarch.o `test -f 'config/tc-loongarch.c' || echo '$(srcdir)/'`config/tc-loongarch.c
 +
-+loongarch-parse.o: config/loongarch-parse.c
++loongarch-parse.o: config/loongarch-parse.c loongarch-parse.h
 +@am__fastdepCC_TRUE@	$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT loongarch-parse.o -MD -MP -MF $(DEPDIR)/loongarch-parse.Tpo -c -o loongarch-parse.o `test -f 'config/loongarch-parse.c' || echo '$(srcdir)/'`config/loongarch-parse.c
 +@am__fastdepCC_TRUE@	$(am__mv) $(DEPDIR)/loongarch-parse.Tpo $(DEPDIR)/loongarch-parse.Po
 +@AMDEP_TRUE@@am__fastdepCC_FALSE@	source='config/loongarch-parse.c' object='loongarch-parse.o' libtool=no @AMDEPBACKSLASH@
@@ -4535,16 +4532,13 @@ index b55f2b88..d59a936a 100644
  	-rm -f m68k-parse.c
  	-rm -f rl78-parse.c
  	-rm -f rx-parse.c
-@@ -2642,6 +2679,22 @@ m68k-parse.@OBJEXT@: m68k-parse.c
+@@ -2642,6 +2679,19 @@ m68k-parse.@OBJEXT@: m68k-parse.c
  # Don't let the .y.h rule clobber m68k-parse.h.
  m68k-parse.h: ; @true
  $(srcdir)/config/m68k-parse.h: ; @true
 +
-+loongarch-parse.c: $(srcdir)/config/loongarch-parse.y
++loongarch-parse.c loongarch-parse.h: $(srcdir)/config/loongarch-parse.y
 +	$(SHELL) $(YLWRAP) $(srcdir)/config/loongarch-parse.y y.tab.c loongarch-parse.c y.tab.h loongarch-parse.h -- $(YACCCOMPILE) -d ;
-+loongarch-parse.h: loongarch-parse.c
-+loongarch-parse.h: ; @true
-+$(srcdir)/config/loongarch-parse.h: ; @true
 +
 +loongarch-lex.c: $(srcdir)/config/loongarch-lex.l
 +	$(SHELL) $(YLWRAP) $(srcdir)/config/loongarch-lex.l lex.yy.c loongarch-lex.c -- $(LEXCOMPILE)
diff --git a/binutils.spec b/binutils.spec
index 03b1555ecc3658a44afbc0f544aab178049b1e65..511edb790c683f0c099d050b92858b93a4d7b081 100644
--- a/binutils.spec
+++ b/binutils.spec
@@ -650,10 +650,13 @@ Buildroot: %(mktemp -ud %{_tmppath}/%{name}-%{version}-%{release}-XXXXXX)
 # Perl, sed and touch are all used in the %%prep section of this spec file.
 BuildRequires: gcc, perl, sed, coreutils
 
+# Loongarch needs yyac
+BuildRequires: bison
+
 # Gold needs bison in order to build gold/yyscript.c.
 # Bison needs m4.
 %if "%{build_gold}" == "both"
-BuildRequires: bison, m4, gcc-c++
+BuildRequires: m4, gcc-c++
 %endif
 
 %if %{without bootstrap}