diff --git a/ghc-unicode-collation.changes b/ghc-unicode-collation.changes
index cf2fdb1..84d4e83 100644
--- a/ghc-unicode-collation.changes
+++ b/ghc-unicode-collation.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Thu Jan 23 06:07:35 UTC 2025 - Peter Simons <psimons@suse.com>
+
+- Update unicode-collation to version 0.1.3.6 revision 2.
+  Upstream has revised the Cabal build instructions on Hackage.
+
 -------------------------------------------------------------------
 Tue Jun 18 01:33:39 UTC 2024 - Peter Simons <psimons@suse.com>
 
diff --git a/ghc-unicode-collation.spec b/ghc-unicode-collation.spec
index 4616f6f..5a92c67 100644
--- a/ghc-unicode-collation.spec
+++ b/ghc-unicode-collation.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package ghc-unicode-collation
 #
-# Copyright (c) 2024 SUSE LLC
+# Copyright (c) 2025 SUSE LLC
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed
@@ -26,7 +26,7 @@ Summary:        Haskell implementation of the Unicode Collation Algorithm
 License:        BSD-2-Clause
 URL:            https://hackage.haskell.org/package/%{pkg_name}
 Source0:        https://hackage.haskell.org/package/%{pkg_name}-%{version}/%{pkg_name}-%{version}.tar.gz
-Source1:        https://hackage.haskell.org/package/%{pkg_name}-%{version}/revision/1.cabal#/%{pkg_name}.cabal
+Source1:        https://hackage.haskell.org/package/%{pkg_name}-%{version}/revision/2.cabal#/%{pkg_name}.cabal
 BuildRequires:  ghc-Cabal-devel
 BuildRequires:  ghc-base-devel
 BuildRequires:  ghc-base-prof
diff --git a/unicode-collation.cabal b/unicode-collation.cabal
index a35c53e..19e080d 100644
--- a/unicode-collation.cabal
+++ b/unicode-collation.cabal
@@ -1,7 +1,7 @@
 cabal-version:       2.2
 name:                unicode-collation
 version:             0.1.3.6
-x-revision: 1
+x-revision: 2
 synopsis:            Haskell implementation of the Unicode Collation Algorithm
 description:         This library provides a pure Haskell implementation of
                      the Unicode Collation Algorithm described at
@@ -51,7 +51,7 @@ flag executable
   Default:             False
 
 common common-options
-  build-depends:       base >= 4.11 && < 4.21
+  build-depends:       base >= 4.11 && < 4.22
 
   ghc-options:         -Wall
                        -Wcompat