diff --git a/configure.ac b/configure.ac
index 7b9fcc490..ecf1b1ada 100644
--- a/configure.ac
+++ b/configure.ac
@@ -7,13 +7,16 @@ AC_CONFIG_HEADERS(config.h)
 AM_MAINTAINER_MODE
 AC_CONFIG_MACRO_DIR([m4])
 
-API_VERSION=3.0.0.0
+API_VERSION=3.12.0.0
 AC_SUBST(API_VERSION)
 CAIRO_API_VERSION=1.12.0.0
 AC_SUBST(CAIRO_API_VERSION)
 POLICY_VERSIONS=""
 AC_SUBST(POLICY_VERSIONS)
 
+PKG_VERSION=3.12.0
+AC_SUBST(PKG_VERSION)
+
 PACKAGE_VERSION=gtk-sharp-3.0
 AC_SUBST(PACKAGE_VERSION)
 
diff --git a/gdk/gdk-sharp-3.0.pc.in b/gdk/gdk-sharp-3.0.pc.in
index b93391215..fbba15f36 100644
--- a/gdk/gdk-sharp-3.0.pc.in
+++ b/gdk/gdk-sharp-3.0.pc.in
@@ -6,7 +6,7 @@ gapidir=${prefix}/share/gapi-3.0
 
 Name: Gdk#
 Description: Gdk# - GDK .NET Binding
-Version: @VERSION@
+Version: @PKG_VERSION@
 Cflags: -I:${gapidir}/gdk-api.xml
 Libs: -r:${libdir}/mono/@PACKAGE_VERSION@/gdk-sharp.dll
 Requires: glib-sharp-3.0
diff --git a/gio/gio-sharp-3.0.pc.in b/gio/gio-sharp-3.0.pc.in
index efb3810e3..fd39c6796 100644
--- a/gio/gio-sharp-3.0.pc.in
+++ b/gio/gio-sharp-3.0.pc.in
@@ -6,7 +6,7 @@ gapidir=${prefix}/share/gapi-3.0
 
 Name: GIO#
 Description: GIO# - GIO .NET Binding
-Version: @VERSION@
+Version: @PKG_VERSION@
 Cflags: -I:${gapidir}/gio-api.xml
 Libs: -r:${assemblies_dir}/gio-sharp.dll
 Requires: glib-sharp-3.0
diff --git a/glib/glib-sharp-3.0.pc.in b/glib/glib-sharp-3.0.pc.in
index fcf0fb72c..429f32ca2 100644
--- a/glib/glib-sharp-3.0.pc.in
+++ b/glib/glib-sharp-3.0.pc.in
@@ -6,7 +6,7 @@ gapidir=${prefix}/share/gapi-3.0
 
 Name: GLib#
 Description: GLib# - .NET Binding for the glib library.
-Version: @VERSION@
+Version: @PKG_VERSION@
 Cflags: -I:${gapidir}/glib-api.xml
 Libs: -r:${libdir}/mono/@PACKAGE_VERSION@/glib-sharp.dll
 
diff --git a/gtk/gtk-sharp-3.0.pc.in b/gtk/gtk-sharp-3.0.pc.in
index a5ed3ca2c..c7097d0a6 100644
--- a/gtk/gtk-sharp-3.0.pc.in
+++ b/gtk/gtk-sharp-3.0.pc.in
@@ -6,7 +6,7 @@ gapidir=${prefix}/share/gapi-3.0
 
 Name: Gtk#
 Description: Gtk# - GNOME .NET Binding
-Version: @VERSION@
+Version: @PKG_VERSION@
 Cflags: -I:${gapidir}/cairo-api.xml -I:${gapidir}/pango-api.xml -I:${gapidir}/atk-api.xml -I:${gapidir}/gtk-api.xml
 Libs: -r:${libdir}/mono/@PACKAGE_VERSION@/cairo-sharp.dll -r:${libdir}/mono/@PACKAGE_VERSION@/pango-sharp.dll -r:${libdir}/mono/@PACKAGE_VERSION@/atk-sharp.dll  -r:${libdir}/mono/@PACKAGE_VERSION@/gtk-sharp.dll
 Requires: glib-sharp-3.0 gio-sharp-3.0 gdk-sharp-3.0
diff --git a/gtkdotnet/gtk-dotnet-3.0.pc.in b/gtkdotnet/gtk-dotnet-3.0.pc.in
index e8afe6830..8bf1741e7 100644
--- a/gtkdotnet/gtk-dotnet-3.0.pc.in
+++ b/gtkdotnet/gtk-dotnet-3.0.pc.in
@@ -5,6 +5,6 @@ libdir=${exec_prefix}/lib
 
 Name: Gtk.DotNet
 Description: .NET Extensions for Gtk
-Version: @VERSION@
+Version: @PKG_VERSION@
 Requires:gtk-sharp-3.0
 Libs: -r:${libdir}/mono/@PACKAGE_VERSION@/gtk-dotnet.dll
diff --git a/parser/gapi-3.0.pc.in b/parser/gapi-3.0.pc.in
index 665d02608..fdf2d6a11 100644
--- a/parser/gapi-3.0.pc.in
+++ b/parser/gapi-3.0.pc.in
@@ -3,4 +3,4 @@ prefix=${pcfiledir}/../..
 
 Name: GAPI
 Description: GObject .NET API Wrapping Tool
-Version: @VERSION@
+Version: @PKG_VERSION@