diff --git a/fix_buildrequires.patch b/fix_buildrequires.patch
new file mode 100644
index 0000000..7960682
--- /dev/null
+++ b/fix_buildrequires.patch
@@ -0,0 +1,81 @@
+diff -up xfce4-vala-4.10.3/configure.bak xfce4-vala-4.10.3/configure
+--- xfce4-vala-4.10.3/configure.bak	2021-08-06 07:24:46.063295907 +0000
++++ xfce4-vala-4.10.3/configure	2021-08-06 07:29:19.274598268 +0000
+@@ -2460,11 +2460,11 @@ $as_echo "$as_me: WARNING: " >&2;}
+ fi
+ 
+ 
+-LIBXFCE4UI=libxfce4ui-1
++LIBXFCE4UI=libxfce4ui-2
+ 
+ if test -n "$PKG_CONFIG" && \
+-    { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"libxfce4ui-1 >= 4.10.0\""; } >&5
+-  ($PKG_CONFIG --exists --print-errors "libxfce4ui-1 >= 4.10.0") 2>&5
++    { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"libxfce4ui-2 >= 4.16.0\""; } >&5
++  ($PKG_CONFIG --exists --print-errors "libxfce4ui-2 >= 4.16.0") 2>&5
+   ac_status=$?
+   $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+   test $ac_status = 0; }; then
+@@ -2472,8 +2472,8 @@ if test -n "$PKG_CONFIG" && \
+ else
+   { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: " >&5
+ $as_echo "$as_me: WARNING: " >&2;}
+-		 { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: The package libxfce4ui-1 >= 4.10.0 was not found" >&5
+-$as_echo "$as_me: WARNING: The package libxfce4ui-1 >= 4.10.0 was not found" >&2;}
++		 { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: The package libxfce4ui-2 >= 4.16.0 was not found" >&5
++$as_echo "$as_me: WARNING: The package libxfce4ui-2 >= 4.16.0 was not found" >&2;}
+ 		 { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: You need it to run the introspection tool" >&5
+ $as_echo "$as_me: WARNING: You need it to run the introspection tool" >&2;}
+ 		 { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: " >&5
+@@ -2481,11 +2481,11 @@ $as_echo "$as_me: WARNING: " >&2;}
+ fi
+ 
+ 
+-LIBXFCE4PANEL=libxfce4panel-1.0
++LIBXFCE4PANEL=libxfce4panel-2.0
+ 
+ if test -n "$PKG_CONFIG" && \
+-    { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"libxfce4panel-1.0 >= 4.10.0\""; } >&5
+-  ($PKG_CONFIG --exists --print-errors "libxfce4panel-1.0 >= 4.10.0") 2>&5
++    { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"libxfce4panel-2.0 >= 4.16.0\""; } >&5
++  ($PKG_CONFIG --exists --print-errors "libxfce4panel-2.0 >= 4.16.0") 2>&5
+   ac_status=$?
+   $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+   test $ac_status = 0; }; then
+@@ -2493,8 +2493,8 @@ if test -n "$PKG_CONFIG" && \
+ else
+   { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: " >&5
+ $as_echo "$as_me: WARNING: " >&2;}
+-		 { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: The package libxfce4panel-1.0 >= 4.10.0 was not found" >&5
+-$as_echo "$as_me: WARNING: The package libxfce4panel-1.0 >= 4.10.0 was not found" >&2;}
++		 { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: The package libxfce4panel-2.0 >= 4.16.0 was not found" >&5
++$as_echo "$as_me: WARNING: The package libxfce4panel-2.0 >= 4.16.0 was not found" >&2;}
+ 		 { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: You need it to run the introspection tool" >&5
+ $as_echo "$as_me: WARNING: You need it to run the introspection tool" >&2;}
+ 		 { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: " >&5
+@@ -2502,11 +2502,11 @@ $as_echo "$as_me: WARNING: " >&2;}
+ fi
+ 
+ 
+-EXO=exo-1
++EXO=exo-2
+ 
+ if test -n "$PKG_CONFIG" && \
+-    { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"exo-1 >= 0.8.0\""; } >&5
+-  ($PKG_CONFIG --exists --print-errors "exo-1 >= 0.8.0") 2>&5
++    { { $as_echo "$as_me:${as_lineno-$LINENO}: \$PKG_CONFIG --exists --print-errors \"exo-2 >= 4.16.0\""; } >&5
++  ($PKG_CONFIG --exists --print-errors "exo-2 >= 4.16.0") 2>&5
+   ac_status=$?
+   $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+   test $ac_status = 0; }; then
+@@ -2514,8 +2514,8 @@ if test -n "$PKG_CONFIG" && \
+ else
+   { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: " >&5
+ $as_echo "$as_me: WARNING: " >&2;}
+-		 { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: The package exo-1 >= 0.8.0 was not found" >&5
+-$as_echo "$as_me: WARNING: The package exo-1 >= 0.8.0 was not found" >&2;}
++		 { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: The package exo-2 >= 4.16.0 was not found" >&5
++$as_echo "$as_me: WARNING: The package exo-2 >= 4.16.0 was not found" >&2;}
+ 		 { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: You need it to run the introspection tool" >&5
+ $as_echo "$as_me: WARNING: You need it to run the introspection tool" >&2;}
+ 		 { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: " >&5
diff --git a/xfce4-vala.spec b/xfce4-vala.spec
index 5ae2b6a..f72f292 100644
--- a/xfce4-vala.spec
+++ b/xfce4-vala.spec
@@ -1,13 +1,15 @@
-%global vala_version_api 0.48
+%global vala_version_api 0.50
 
 Name:           xfce4-vala
 Version:        4.10.3
-Release:        1
+Release:        2
 Summary:        Vala bindings for the Xfce framework
 License:        LGPLv2+
 #Group:          Development/Libraries
 URL:            http://wiki.xfce.org/vala-bindings
 Source0:        http://archive.xfce.org/src/bindings/xfce4-vala/4.10/xfce4-vala-4.10.3.tar.bz2
+Patch0: 	fix_buildrequires.patch
+
 BuildRoot:      %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
 BuildArch:      noarch
 BuildRequires: exo-devel
@@ -31,6 +33,14 @@ libraries written in C.
 
 %prep
 %setup -q
+%patch0 -p1
+cd vapi
+mv exo-1.deps exo-2.deps
+mv exo-1.vapi exo-2.vapi
+mv libxfce4panel-1.0.deps libxfce4panel-2.0.deps
+mv libxfce4panel-1.0.vapi libxfce4panel-2.0.vapi
+mv libxfce4ui-1.deps libxfce4ui-2.deps
+mv libxfce4ui-1.vapi libxfce4ui-2.vapi
 
 %build
 %configure --with-vala-api=%{vala_version_api}
@@ -46,5 +56,9 @@ libraries written in C.
 %{_datadir}/vala-%{vala_version_api}/vapi/*
 
 %changelog
+* Fri Aug 06 2021 Wenlong Ding <wenlong.ding@turbolinux.com.cn> - 4.10.3-2
+- Rebuilt for vala 0.50
+- Add fix_buildrequires.patch for xfce4-4.16
+
 * Mon Jul 27 2020 Dillon Chen <dillon.chen@turbolinux.com.cn> - 4.10.3-1
 - Init package