diff --git a/0001-build-Fix-vulkan-reference-in-pc-file.patch b/0001-build-Fix-vulkan-reference-in-pc-file.patch
new file mode 100644
index 0000000..817b71e
--- /dev/null
+++ b/0001-build-Fix-vulkan-reference-in-pc-file.patch
@@ -0,0 +1,28 @@
+From 7d5826ccf7a8d5ad39f370a3f214e4811ca1075b Mon Sep 17 00:00:00 2001
+From: Jan Tojnar <jtojnar@gmail.com>
+Date: Sun, 27 Dec 2020 06:42:29 +0100
+Subject: [PATCH] build: Fix vulkan reference in pc file
+
+A mistake in string concatenation caused the vulcan dependency to be omitted.
+
+Fixes: https://gitlab.gnome.org/GNOME/gtk/-/issues/3517
+---
+ meson.build | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/meson.build b/meson.build
+index bb58717f6a..60e7729a8e 100644
+--- a/meson.build
++++ b/meson.build
+@@ -723,7 +723,7 @@ if cairogobj_pkg_found
+ endif
+ 
+ if vulkan_pkg_found
+-  gdk_packages += 'vulkan'
++  gdk_packages += ' vulkan'
+ endif
+ 
+ pkgconf.set('GDK_PACKAGES', gdk_packages)
+-- 
+2.29.2
+
diff --git a/gtk4.spec b/gtk4.spec
index cdda821..89f4b24 100644
--- a/gtk4.spec
+++ b/gtk4.spec
@@ -17,17 +17,20 @@
 
 Name:           gtk4
 Version:        4.0.0
-Release:        1%{?dist}
+Release:        3%{?dist}
 Summary:        GTK graphical user interface library
 
 License:        LGPLv2+
 URL:            https://www.gtk.org
 Source0:        https://download.gnome.org/sources/gtk/4.0/gtk-%{version}.tar.xz
 Patch0:         %{name}-gcc11.patch
+Patch1:         0001-build-Fix-vulkan-reference-in-pc-file.patch
 
 BuildRequires:  cups-devel
 BuildRequires:  desktop-file-utils
 BuildRequires:  docbook-style-xsl
+BuildRequires:  gtk-doc
+BuildRequires:  pandoc
 BuildRequires:  gcc
 BuildRequires:  gcc-c++
 BuildRequires:  gettext
@@ -112,7 +115,17 @@ Requires: gtk4%{?_isa} = %{version}-%{release}
 
 %description devel
 This package contains the libraries and header files that are needed
-for writing applications with version 4 of the GTK widget toolkit.
+for writing applications with version 4 of the GTK widget toolkit. If
+you plan to develop applications with GTK, consider installing the
+gtk4-devel-docs package.
+
+%package devel-docs
+Summary: Developer documentation for GTK
+Requires: gtk4 = %{version}-%{release}
+
+%description devel-docs
+This package contains developer documentation for version 4 of the GTK
+widget toolkit.
 
 %prep
 %autosetup -p1 -n gtk-%{version}
@@ -129,11 +142,13 @@ export CFLAGS='-fno-strict-aliasing %optflags'
         -Dmedia-gstreamer=enabled \
         -Dxinerama=enabled \
         -Dcolord=enabled \
-        -Dgtk_doc=false \
+        -Dgtk_doc=true \
         -Dman-pages=true \
         -Dinstall-tests=false
 
 %meson_build
+# Workaround for https://github.com/mesonbuild/meson/issues/8117
+%meson_build gtk4-doc:custom
 
 %install
 %meson_install
@@ -215,7 +230,16 @@ desktop-file-validate %{buildroot}%{_datadir}/applications/*.desktop
 %{_mandir}/man1/gtk4-query-settings.1*
 %{_mandir}/man1/gtk4-widget-factory.1*
 
+%files devel-docs
+%{_datadir}/gtk-doc
+
 %changelog
+* Sat Jan 09 2021 Kalev Lember <klember@redhat.com> - 4.0.0-3
+- Fix vulkan reference in pc file
+
+* Tue Dec 22 14:13:09 +04 2020 Marc-André Lureau <marcandre.lureau@redhat.com> - 4.0.0-2
+- Add back gtk4-devel-docs
+
 * Wed Dec 16 2020 Kalev Lember <klember@redhat.com> - 4.0.0-1
 - Update to 4.0.0
 - Tighten soname globs