diff --git a/deps/vala/patch_support-gtk318.diff b/deps/vala/patch_support-gtk318.diff
new file mode 100644
index 0000000..cace597
--- /dev/null
+++ b/deps/vala/patch_support-gtk318.diff
@@ -0,0 +1,50 @@
+--- vala-0.34.2/vapi/gtk+-3.0.vapi.orig	2016-09-27 22:44:37.000000000 +1000
++++ vala-0.34.2/vapi/gtk+-3.0.vapi	2016-11-14 16:24:16.635334244 +1000
+@@ -840,6 +840,7 @@
+ 		[CCode (has_construct_function = false, type = "GtkWidget*")]
+ 		public Button.with_mnemonic (string label);
+ 		public bool always_show_image { get; set construct; }
++                public bool focus_on_click { get; set; }
+ 		public Gtk.Widget image { get; set; }
+ 		public Gtk.PositionType image_position { get; set; }
+ 		public string label { get; set construct; }
+@@ -1573,6 +1574,7 @@
+ 		public Gtk.CellArea cell_area { owned get; construct; }
+ 		public int column_span_column { get; set; }
+ 		public int entry_text_column { get; set; }
++                public bool focus_on_click { get; set; }
+ 		public bool has_entry { get; construct; }
+ 		[NoAccessorMethod]
+ 		public bool has_frame { get; set; }
+@@ -2080,6 +2082,7 @@
+ 		[CCode (has_construct_function = false, type = "GtkWidget*")]
+ 		public FileChooserButton.with_dialog (Gtk.Dialog dialog);
+ 		public Gtk.FileChooser dialog { construct; }
++                public bool focus_on_click { get; set; }
+ 		public string title { get; set; }
+ 		public int width_chars { get; set; }
+ 		public virtual signal void file_set ();
+@@ -6692,7 +6695,6 @@
+ 		public unowned Gdk.Display get_display ();
+ 		public bool get_double_buffered ();
+ 		public int get_events ();
+-		public bool get_focus_on_click ();
+ 		public unowned Pango.FontMap? get_font_map ();
+ 		public unowned Cairo.FontOptions? get_font_options ();
+ 		public unowned Gdk.FrameClock? get_frame_clock ();
+@@ -6859,7 +6861,6 @@
+ 		public void set_direction (Gtk.TextDirection dir);
+ 		public void set_double_buffered (bool double_buffered);
+ 		public void set_events (int events);
+-		public void set_focus_on_click (bool focus_on_click);
+ 		public void set_font_map (Pango.FontMap? font_map);
+ 		public void set_font_options (Cairo.FontOptions? options);
+ 		public void set_halign (Gtk.Align align);
+@@ -6927,7 +6928,6 @@
+ 		public Gdk.EventMask events { get; set; }
+ 		[NoAccessorMethod]
+ 		public bool expand { get; set; }
+-		public bool focus_on_click { get; set; }
+ 		public Gtk.Align halign { get; set; }
+ 		[NoAccessorMethod]
+ 		public bool has_default { get; set; }
diff --git a/deps/vala/vala.SlackBuild b/deps/vala/vala.SlackBuild
index 438f948..4fd3bb5 100644
--- a/deps/vala/vala.SlackBuild
+++ b/deps/vala/vala.SlackBuild
@@ -25,7 +25,7 @@
 # Modified by Willy Sudiarto Raharjo for MSB Project
 
 PRGNAM=vala
-VERSION=${VERSION:-0.30.2}
+VERSION=${VERSION:-0.34.4}
 BUILD=${BUILD:-1}
 TAG=${TAG:-_msb}
 
@@ -37,7 +37,7 @@ if [ -z "$ARCH" ]; then
   esac
 fi
 
-wget -c http://ftp.gnome.org/pub/GNOME/sources/vala/0.30/$PRGNAM-$VERSION.tar.xz
+wget -c http://ftp.gnome.org/pub/GNOME/sources/vala/0.34/$PRGNAM-$VERSION.tar.xz
 
 CWD=$(pwd)
 TMP=${TMP:-/tmp/msb}
@@ -73,6 +73,9 @@ find -L . \
  \( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444 \
   -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \;
 
+# Patch to support older GTK+3
+patch -p1 < $CWD/patch_support-gtk318.diff
+
 CFLAGS="$SLKCFLAGS" \
 CXXFLAGS="$SLKCFLAGS" \
 ./configure \