diff --git a/.gitignore b/.gitignore
index 7b2e7fc..406460e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -41,3 +41,4 @@
 /webkitgtk-2.12.0.tar.xz
 /webkitgtk-2.12.1.tar.xz
 /webkitgtk-2.12.2.tar.xz
+/webkitgtk-2.12.3.tar.xz
diff --git a/sources b/sources
index 9ed4581..3ba2373 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-41e018d651413fdbcd4b6480ab1fbd7b  webkitgtk-2.12.2.tar.xz
+aebb4029c09dd81664aa830e4a584c85  webkitgtk-2.12.3.tar.xz
diff --git a/webkitgtk-2.11.5-youtube.patch b/webkitgtk-2.11.5-youtube.patch
deleted file mode 100644
index e5a43a3..0000000
--- a/webkitgtk-2.11.5-youtube.patch
+++ /dev/null
@@ -1,34 +0,0 @@
-diff -up webkitgtk-2.11.5/Source/WebCore/platform/graphics/gstreamer/MediaPlayerPrivateGStreamer.cpp.orig webkitgtk-2.11.5/Source/WebCore/platform/graphics/gstreamer/MediaPlayerPrivateGStreamer.cpp
---- webkitgtk-2.11.5/Source/WebCore/platform/graphics/gstreamer/MediaPlayerPrivateGStreamer.cpp.orig	2016-02-09 10:04:54.898217667 +0100
-+++ webkitgtk-2.11.5/Source/WebCore/platform/graphics/gstreamer/MediaPlayerPrivateGStreamer.cpp	2016-02-09 10:13:35.080875509 +0100
-@@ -1734,7 +1734,7 @@ static HashSet<String, ASCIICaseInsensit
-             "video/flv",
-             "video/mj2",
-             "video/mp2t",
--            "video/mp4",
-+//            "video/mp4",
-             "video/mpeg",
-             "video/mpegts",
-             "video/ogg",
-@@ -1759,6 +1759,21 @@ static HashSet<String, ASCIICaseInsensit
-         };
-         for (auto& type : mimeTypes)
-             set.add(type);
-+
-+        // Hack to make YouTube work, https://bugs.webkit.org/show_bug.cgi?id=135972
-+        gint exit_status = 1;
-+        GUniqueOutPtr<GError> error;
-+        GUniqueOutPtr<char> stdout_to_discard;
-+        GUniqueOutPtr<char> stderr_to_discard;
-+        gboolean success = g_spawn_command_line_sync(
-+            "rpm -qi gstreamer1-libav",
-+            &stdout_to_discard.outPtr(),
-+            &stderr_to_discard.outPtr(),
-+            &exit_status,
-+            &error.outPtr());
-+        if (success && !error && !exit_status)
-+            set.add(String::fromUTF8("video/mp4"));
-+
-         return set;
-     }();
-     return cache;
diff --git a/webkitgtk4.spec b/webkitgtk4.spec
index e07894e..7e4a0d6 100644
--- a/webkitgtk4.spec
+++ b/webkitgtk4.spec
@@ -6,8 +6,8 @@
         cp -p %1 _license_files/$(echo '%1' | sed -e 's!/!.!g')
 
 Name:           webkitgtk4
-Version:        2.12.2
-Release:        2%{?dist}
+Version:        2.12.3
+Release:        1%{?dist}
 Summary:        GTK+ Web content engine library
 
 License:        LGPLv2
@@ -16,8 +16,6 @@ Source0:        http://webkitgtk.org/releases/webkitgtk-%{version}.tar.xz
 
 # https://bugs.webkit.org/show_bug.cgi?id=142074
 Patch0:         webkitgtk-2.7.90-user-agent-branding.patch
-# https://bugs.webkit.org/show_bug.cgi?id=135972
-Patch1:         webkitgtk-2.11.5-youtube.patch
 
 BuildRequires:  at-spi2-core-devel
 BuildRequires:  bison
@@ -248,6 +246,9 @@ make %{?_smp_mflags} -C %{_target_platform}
 %{_datadir}/gtk-doc/html/webkitdomgtk-4.0/
 
 %changelog
+* Tue May 24 2016 Tomas Popela <tpopela@redhat.com> - 2.12.3-1
+- Update to 2.12.3
+
 * Fri Apr 29 2016 Igor Gnatenko <ignatenko@redhat.com> - 2.12.2-2
 - Remove typelib from jsc-devel because it is in jsc