diff --git a/0001-Use-CreateFile-on-Win32-to-make-sure-g_unlink-always.patch b/0001-Use-CreateFile-on-Win32-to-make-sure-g_unlink-always.patch
index 4b60cd9..daa81da 100644
--- a/0001-Use-CreateFile-on-Win32-to-make-sure-g_unlink-always.patch
+++ b/0001-Use-CreateFile-on-Win32-to-make-sure-g_unlink-always.patch
@@ -1,12 +1,12 @@
-diff -rupN --no-dereference glib-2.64.2/gio/tests/org.gtk.test.gschema.override.orig glib-2.64.2-new/gio/tests/org.gtk.test.gschema.override.orig
---- glib-2.64.2/gio/tests/org.gtk.test.gschema.override.orig	2020-04-09 15:43:10.000000000 +0200
-+++ glib-2.64.2-new/gio/tests/org.gtk.test.gschema.override.orig	1970-01-01 01:00:00.000000000 +0100
+diff -rupN --no-dereference glib-2.66.0/gio/tests/org.gtk.test.gschema.override.orig glib-2.66.0-new/gio/tests/org.gtk.test.gschema.override.orig
+--- glib-2.66.0/gio/tests/org.gtk.test.gschema.override.orig	2020-09-10 12:42:41.561684100 +0200
++++ glib-2.66.0-new/gio/tests/org.gtk.test.gschema.override.orig	1970-01-01 01:00:00.000000000 +0100
 @@ -1,2 +0,0 @@
 -[org.gtk.test.per-desktop:GNOME-Classic]
 -desktop = "GNOME Classic"
-diff -rupN --no-dereference glib-2.64.2/gio/tests/org.gtk.test.gschema.xml.orig glib-2.64.2-new/gio/tests/org.gtk.test.gschema.xml.orig
---- glib-2.64.2/gio/tests/org.gtk.test.gschema.xml.orig	2020-04-09 15:43:10.000000000 +0200
-+++ glib-2.64.2-new/gio/tests/org.gtk.test.gschema.xml.orig	1970-01-01 01:00:00.000000000 +0100
+diff -rupN --no-dereference glib-2.66.0/gio/tests/org.gtk.test.gschema.xml.orig glib-2.66.0-new/gio/tests/org.gtk.test.gschema.xml.orig
+--- glib-2.66.0/gio/tests/org.gtk.test.gschema.xml.orig	2020-09-10 12:42:41.561684100 +0200
++++ glib-2.66.0-new/gio/tests/org.gtk.test.gschema.xml.orig	1970-01-01 01:00:00.000000000 +0100
 @@ -1,222 +0,0 @@
 -<schemalist>
 -
@@ -230,10 +230,10 @@ diff -rupN --no-dereference glib-2.64.2/gio/tests/org.gtk.test.gschema.xml.orig 
 -  </schema>
 -
 -</schemalist>
-diff -rupN --no-dereference glib-2.64.2/glib/gstdio.c glib-2.64.2-new/glib/gstdio.c
---- glib-2.64.2/glib/gstdio.c	2020-04-09 15:43:10.000000000 +0200
-+++ glib-2.64.2-new/glib/gstdio.c	2020-04-11 01:09:25.957690903 +0200
-@@ -1036,6 +1036,11 @@ g_open (const gchar *filename,
+diff -rupN --no-dereference glib-2.66.0/glib/gstdio.c glib-2.66.0-new/glib/gstdio.c
+--- glib-2.66.0/glib/gstdio.c	2020-09-10 12:42:41.606684700 +0200
++++ glib-2.66.0-new/glib/gstdio.c	2020-09-15 15:46:25.857827483 +0200
+@@ -1045,6 +1045,11 @@ g_open (const gchar *filename,
  	int          mode)
  {
  #ifdef G_OS_WIN32
@@ -245,7 +245,7 @@ diff -rupN --no-dereference glib-2.64.2/glib/gstdio.c glib-2.64.2-new/glib/gstdi
    wchar_t *wfilename = g_utf8_to_utf16 (filename, -1, NULL, NULL, NULL);
    int retval;
    int save_errno;
-@@ -1046,12 +1051,114 @@ g_open (const gchar *filename,
+@@ -1055,12 +1060,114 @@ g_open (const gchar *filename,
        return -1;
      }
  
@@ -363,7 +363,7 @@ diff -rupN --no-dereference glib-2.64.2/glib/gstdio.c glib-2.64.2-new/glib/gstdi
    return retval;
  #else
    int fd;
-@@ -1099,6 +1206,8 @@ g_creat (const gchar *filename,
+@@ -1108,6 +1215,8 @@ g_creat (const gchar *filename,
  	 int          mode)
  {
  #ifdef G_OS_WIN32
@@ -372,7 +372,7 @@ diff -rupN --no-dereference glib-2.64.2/glib/gstdio.c glib-2.64.2-new/glib/gstdi
    wchar_t *wfilename = g_utf8_to_utf16 (filename, -1, NULL, NULL, NULL);
    int retval;
    int save_errno;
-@@ -1109,12 +1218,41 @@ g_creat (const gchar *filename,
+@@ -1118,12 +1227,41 @@ g_creat (const gchar *filename,
        return -1;
      }
  
@@ -417,7 +417,7 @@ diff -rupN --no-dereference glib-2.64.2/glib/gstdio.c glib-2.64.2-new/glib/gstdi
    return retval;
  #else
    return creat (filename, mode);
-@@ -1556,34 +1694,102 @@ g_fopen (const gchar *filename,
+@@ -1565,34 +1703,102 @@ g_fopen (const gchar *filename,
  	 const gchar *mode)
  {
  #ifdef G_OS_WIN32
diff --git a/mingw-glib2.spec b/mingw-glib2.spec
index 54c6f6c..565f897 100644
--- a/mingw-glib2.spec
+++ b/mingw-glib2.spec
@@ -1,8 +1,8 @@
 %{?mingw_package_header}
 
 Name:           mingw-glib2
-Version:        2.64.3
-Release:        3%{?dist}
+Version:        2.66.0
+Release:        1%{?dist}
 Summary:        MinGW Windows GLib2 library
 
 License:        LGPLv2+
@@ -270,6 +270,9 @@ find %{buildroot} -name "*.la" -delete
 
 
 %changelog
+* Tue Sep 15 2020 Sandro Mani <manisandro@gmail.com> - 2.66.0-1
+- Update to 2.66.0
+
 * Wed Aug 12 13:36:55 GMT 2020 Sandro Mani <manisandro@gmail.com> - 2.64.3-3
 - Rebuild (mingw-gettext)
 
diff --git a/sources b/sources
index 7eb4191..924b924 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (glib-2.64.3.tar.xz) = a3828c37a50e86eb8791be53bd8af848d144e4580841ffab28f3b6eae5144f5cdf4a5d4b43130615b97488e700b274c2468fc7d561b3701a1fc686349501a1db
+SHA512 (glib-2.66.0.tar.xz) = 358e6a840b722139593eb7825c3aa70153eb26036e05d13d3286bcc6d2e962c2b4ddcb0fe5c6728b89bfffbd178101e72c576081ae714326a272a9fc34ed953e