diff --git a/_service b/_service
new file mode 100644
index 0000000..24ee5af
--- /dev/null
+++ b/_service
@@ -0,0 +1,14 @@
+<services>
+	<service name="tar_scm" mode="disabled">
+		<param name="scm">git</param>
+		<param name="url">https://github.com/libyal/libfdatetime</param>
+		<param name="revision">da968c35b74f6b74b9e4884254c258701a95d198</param>
+		<!-- see configure.ac -->
+		<param name="versionformat">20210414</param>
+	</service>
+	<service name="recompress" mode="disabled">
+		<param name="file">*.tar</param>
+		<param name="compression">xz</param>
+	</service>
+	<service name="set_version" mode="disabled"/>
+</services>
diff --git a/libfdatetime-20210414.tar.xz b/libfdatetime-20210414.tar.xz
new file mode 100644
index 0000000..907b470
--- /dev/null
+++ b/libfdatetime-20210414.tar.xz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:0d8597d813aa26d7d38f403fe59dbdb553c055ade5ae28685930426141a051d8
+size 81616
diff --git a/libfdatetime-alpha-20180910.tar.gz b/libfdatetime-alpha-20180910.tar.gz
deleted file mode 100644
index e9ea28f..0000000
--- a/libfdatetime-alpha-20180910.tar.gz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:71a56caa11ec576b4504e9af2a858258402c44f3815c1f8bf24402cce0a86afe
-size 557052
diff --git a/libfdatetime.changes b/libfdatetime.changes
index 0dfaeed..e7a2584 100644
--- a/libfdatetime.changes
+++ b/libfdatetime.changes
@@ -1,3 +1,10 @@
+-------------------------------------------------------------------
+Wed May 12 22:14:43 UTC 2021 - Jan Engelhardt <jengelh@inai.de>
+
+- Update to snapshot 20210414 (da968c35)
+  * No changelog was provided
+- Add system-libs.patch
+
 -------------------------------------------------------------------
 Mon Apr 15 19:45:48 UTC 2019 - Greg Freemyer <Greg.Freemyer@gmail.com>
 
diff --git a/libfdatetime.spec b/libfdatetime.spec
index eec93af..f2e31af 100644
--- a/libfdatetime.spec
+++ b/libfdatetime.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package libfdatetime
 #
-# Copyright (c) 2019 SUSE LINUX GmbH, Nuernberg, Germany.
+# Copyright (c) 2021 SUSE LLC
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed
@@ -18,18 +18,19 @@
 
 Name:           libfdatetime
 %define lname	libfdatetime1
-%define timestamp 20180910
-Version:        0~%timestamp
+Version:        20210414
 Release:        0
 Summary:        A library for date and time data types
 License:        LGPL-3.0-or-later
 Group:          Development/Libraries/C and C++
-Url:            https://github.com/libyal/libfdatetime/wiki
-Source:         https://github.com/libyal/libfdatetime/releases/download/%timestamp/%name-alpha-%timestamp.tar.gz
+URL:            https://github.com/libyal/libfdatetime
+Source:         %name-%version.tar.xz
+Patch1:         system-libs.patch
+BuildRequires:  c_compiler
+BuildRequires:  gettext-tools >= 0.18.1
+BuildRequires:  libtool
 BuildRequires:  pkg-config
-BuildRequires:  pkgconfig(libcerror) >= 20130609
-BuildRequires:  pkgconfig(libcstring) >= 20150101
-BuildRoot:      %{_tmppath}/%{name}-%{version}-build
+BuildRequires:  pkgconfig(libcerror) >= 20201121
 
 %description
 A library for date and time data types. Part of the libyal family of libraries.
@@ -53,27 +54,25 @@ This subpackage contains libraries and header files for developing
 applications that want to make use of libfdatetime.
 
 %prep
-%setup -qn libfdatetime-%timestamp
+%autosetup -p1
 
 %build
-%configure --disable-static --enable-wide-character-type
-make %{?_smp_mflags}
+if [ ! -e configure ]; then ./autogen.sh; fi
+%configure --disable-static
+%make_build
 
 %install
-make install DESTDIR="%buildroot"
+%make_install
 rm -f "%buildroot/%_libdir"/*.la
 
 %post   -n %lname -p /sbin/ldconfig
 %postun -n %lname -p /sbin/ldconfig
 
 %files -n %lname
-%defattr(-,root,root)
-%doc AUTHORS ChangeLog
-%license COPYING 
+%license COPYING*
 %_libdir/libfdatetime.so.1*
 
 %files devel
-%defattr(-,root,root)
 %_includedir/libfdatetime*
 %_libdir/libfdatetime.so
 %_libdir/pkgconfig/libfdatetime.pc
diff --git a/system-libs.patch b/system-libs.patch
new file mode 100644
index 0000000..59b3301
--- /dev/null
+++ b/system-libs.patch
@@ -0,0 +1,43 @@
+From: Jan Engelhardt <jengelh@inai.de>
+Date: 2021-05-12 17:36:02.536572543 +0200
+
+Some dirs are not present in snapshots directly generated from git
+(nor are they marked as a submodule). Patch it out, since we have
+them as system libs.
+---
+ Makefile.am  |    2 --
+ configure.ac |    1 -
+ 2 files changed, 3 deletions(-)
+
+Index: libfdatetime/Makefile.am
+===================================================================
+--- libfdatetime.orig/Makefile.am
++++ libfdatetime/Makefile.am
+@@ -3,7 +3,6 @@ ACLOCAL_AMFLAGS = -I m4
+ SUBDIRS = \
+ 	include \
+ 	common \
+-	libcerror \
+ 	libfdatetime \
+ 	po \
+ 	tests \
+@@ -53,7 +52,6 @@ lib: library
+ 
+ library:
+ 	(cd $(srcdir)/common && $(MAKE) $(AM_MAKEFLAGS))
+-	(cd $(srcdir)/libcerror && $(MAKE) $(AM_MAKEFLAGS))
+ 	(cd $(srcdir)/libfdatetime && $(MAKE) $(AM_MAKEFLAGS))
+ 	(cd $(srcdir)/po && $(MAKE) $(AM_MAKEFLAGS))
+ 
+Index: libfdatetime/configure.ac
+===================================================================
+--- libfdatetime.orig/configure.ac
++++ libfdatetime/configure.ac
+@@ -91,7 +91,6 @@ dnl Generate Makefiles
+ AC_CONFIG_FILES([Makefile])
+ AC_CONFIG_FILES([include/Makefile])
+ AC_CONFIG_FILES([common/Makefile])
+-AC_CONFIG_FILES([libcerror/Makefile])
+ AC_CONFIG_FILES([libfdatetime/Makefile])
+ AC_CONFIG_FILES([po/Makefile.in])
+ AC_CONFIG_FILES([po/Makevars])