diff --git a/gap-sla.changes b/gap-sla.changes
index ce6d0d8..59a397a 100644
--- a/gap-sla.changes
+++ b/gap-sla.changes
@@ -1,3 +1,11 @@
+-------------------------------------------------------------------
+Sat Nov 19 01:18:59 UTC 2022 - Jan Engelhardt <jengelh@inai.de>
+
+- Update to release 1.5.3
+  * Added functionality for Weyl groups as permutation groups.
+  * Some functionality for Weyl groups as perm groups, and
+    branching for reductive subalgebras.
+
 -------------------------------------------------------------------
 Mon Nov 21 17:26:55 UTC 2016 - jengelh@inai.de
 
diff --git a/gap-sla.spec b/gap-sla.spec
index e6a4250..3c5f62f 100644
--- a/gap-sla.spec
+++ b/gap-sla.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package gap-sla
 #
-# Copyright (c) 2016 SUSE LINUX GmbH, Nuernberg, Germany.
+# Copyright (c) 2022 SUSE LLC
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed
@@ -17,27 +17,25 @@
 
 
 Name:           gap-sla
-Version:        1.2
+Version:        1.5.3
 Release:        0
 Summary:        GAP: Computations with simple Lie algebras
 License:        GPL-2.0+
 Group:          Productivity/Scientific/Math
-Url:            http://www.science.unitn.it/~degraaf/sla.html
-
-Source:         https://www.gap-system.org/pub/gap/gap4/tar.bz2/packages/sla-%version.tar.bz2
+URL:            https://gap-packages.github.io/sla/
+#Git-Clone:     https://github.com/gap-packages/sla
+Source:         https://github.com/gap-packages/sla/releases/download/v%version/sla-%version.tar.gz
 BuildRequires:  gap-rpm-devel
 BuildRequires:  xz
-BuildRoot:      %{_tmppath}/%{name}-%{version}-build
 BuildArch:      noarch
-Requires:       gap-core >= 4.3
-Requires:       gap-quagroup >= 1.3
-Suggests:       gap-gapdoc >= 1.0
+Requires:       gap-core >= 4.8
+Requires:       gap-quagroup >= 1.8
 
 %description
 The package SLA contains functionality for working with simple Lie algebras.
 
 %prep
-%setup -qn sla
+%autosetup -n sla-%version
 
 %build
 
@@ -45,6 +43,5 @@ The package SLA contains functionality for working with simple Lie algebras.
 %gappkg_simple_install
 
 %files -f %name.files
-%defattr(-,root,root)
 
 %changelog
diff --git a/sla-1.2.tar.bz2 b/sla-1.2.tar.bz2
deleted file mode 100644
index 17a7651..0000000
--- a/sla-1.2.tar.bz2
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:e5efd93ac2c9688a768832eff5d382fc7dbbfddd8e75715fb67387f4b4ccb697
-size 805213
diff --git a/sla-1.5.3.tar.gz b/sla-1.5.3.tar.gz
new file mode 100644
index 0000000..3d10bc4
--- /dev/null
+++ b/sla-1.5.3.tar.gz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:debcc69d2815dce644d7150987d7c1059127f7db1c668167880d272caaea09d5
+size 1019709