diff --git a/_service b/_service
deleted file mode 100644
index 8122451..0000000
--- a/_service
+++ /dev/null
@@ -1,14 +0,0 @@
-<services>
-	<service name="tar_scm" mode="disabled">
-		<param name="scm">git</param>
-		<param name="url">https://github.com/libyal/libcthreads</param>
-		<param name="revision">036bab2b2931e518c549bbab994cea8aadb921a8</param>
-		<!-- see configure.ac -->
-		<param name="versionformat">20210415</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/libcthreads-20210415.tar.xz b/libcthreads-20210415.tar.xz
deleted file mode 100644
index 7011bc6..0000000
--- a/libcthreads-20210415.tar.xz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:d0581504c9e76a23552a66c196ede7c77cc7afd6864d68b0185571bb5924dbaf
-size 75176
diff --git a/libcthreads-alpha-20211115.tar.gz b/libcthreads-alpha-20211115.tar.gz
new file mode 100644
index 0000000..d19ff4e
--- /dev/null
+++ b/libcthreads-alpha-20211115.tar.gz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d16cfcf85a79f811a44835319caad3eee7346ac0b2f689d062c91dcda869ab70
+size 548946
diff --git a/libcthreads-alpha-20211115.tar.gz.asc b/libcthreads-alpha-20211115.tar.gz.asc
new file mode 100644
index 0000000..bbaabf2
--- /dev/null
+++ b/libcthreads-alpha-20211115.tar.gz.asc
@@ -0,0 +1,11 @@
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diff --git a/libcthreads.changes b/libcthreads.changes
index f26ce1c..623b728 100644
--- a/libcthreads.changes
+++ b/libcthreads.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Sun Nov 14 16:42:30 UTC 2021 - Jan Engelhardt <jengelh@inai.de>
+
+- Update to tag 20211115
+  * Build updates for MSVC.
+
 -------------------------------------------------------------------
 Wed May 12 15:27:52 UTC 2021 - Jan Engelhardt <jengelh@inai.de>
 
diff --git a/libcthreads.keyring b/libcthreads.keyring
new file mode 100644
index 0000000..da327a1
--- /dev/null
+++ b/libcthreads.keyring
@@ -0,0 +1,29 @@
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+-----END PGP PUBLIC KEY BLOCK-----
diff --git a/libcthreads.spec b/libcthreads.spec
index 86961fa..72d4f8f 100644
--- a/libcthreads.spec
+++ b/libcthreads.spec
@@ -18,13 +18,15 @@
 
 Name:           libcthreads
 %define lname	libcthreads1
-Version:        20210415
+Version:        20211115
 Release:        0
 Summary:        Library for C threads functions
 License:        LGPL-3.0-or-later
 Group:          Development/Libraries/C and C++
 URL:            https://github.com/libyal/libcthreads
-Source:         %name-%version.tar.xz
+Source:         https://github.com/libyal/libcthreads/releases/download/%version/libcthreads-alpha-%version.tar.gz
+Source2:        https://github.com/libyal/libcthreads/releases/download/%version/libcthreads-alpha-%version.tar.gz.asc
+Source3:        %name.keyring
 Patch1:         system-libs.patch
 BuildRequires:  c_compiler
 BuildRequires:  gettext-tools >= 0.18.1
@@ -61,7 +63,7 @@ applications that want to make use of libcthreads.
 %autosetup -p1
 
 %build
-if [ ! -e configure ]; then ./autogen.sh; fi
+autoreconf -fi
 %configure --disable-static
 %make_build