diff --git a/ghc-vector-algorithms.changes b/ghc-vector-algorithms.changes
index 5788644..28ee27b 100644
--- a/ghc-vector-algorithms.changes
+++ b/ghc-vector-algorithms.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Mon Feb  8 05:05:20 UTC 2021 - psimons@suse.com
+
+- Update vector-algorithms to version 0.8.0.4 revision 1.
+  Upstream has revised the Cabal build instructions on Hackage.
+
 -------------------------------------------------------------------
 Thu Dec 17 12:20:00 UTC 2020 - Ondřej Súkup <mimi.vx@gmail.com>
  
diff --git a/ghc-vector-algorithms.spec b/ghc-vector-algorithms.spec
index 1d2961b..0114e25 100644
--- a/ghc-vector-algorithms.spec
+++ b/ghc-vector-algorithms.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package ghc-vector-algorithms
 #
-# Copyright (c) 2020 SUSE LLC
+# 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
@@ -25,6 +25,7 @@ Summary:        Efficient algorithms for vector arrays
 License:        BSD-3-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
 BuildRequires:  ghc-Cabal-devel
 BuildRequires:  ghc-bytestring-devel
 BuildRequires:  ghc-primitive-devel
@@ -53,6 +54,7 @@ files.
 
 %prep
 %autosetup -n %{pkg_name}-%{version}
+cp -p %{SOURCE1} %{pkg_name}.cabal
 
 %build
 %ghc_lib_build
diff --git a/vector-algorithms.cabal b/vector-algorithms.cabal
new file mode 100644
index 0000000..761d149
--- /dev/null
+++ b/vector-algorithms.cabal
@@ -0,0 +1,154 @@
+name:              vector-algorithms
+version:           0.8.0.4
+x-revision: 1
+license:           BSD3
+license-file:      LICENSE
+author:            Dan Doel
+maintainer:        Dan Doel <dan.doel@gmail.com>
+                   Erik de Castro Lopo <erikd@mega-nerd.com>
+copyright:         (c) 2008,2009,2010,2011,2012,2013,2014,2015 Dan Doel
+                   (c) 2015 Tim Baumann
+homepage:          https://github.com/erikd/vector-algorithms/
+category:          Data
+synopsis:          Efficient algorithms for vector arrays
+description:       Efficient algorithms for sorting vector arrays. At some stage
+                   other vector algorithms may be added.
+build-type:        Simple
+cabal-version:     >= 1.10
+extra-source-files: CHANGELOG.md
+
+
+flag BoundsChecks
+  description: Enable bounds checking
+  default: True
+
+flag UnsafeChecks
+  description: Enable bounds checking in unsafe operations at the cost of a
+               significant performance penalty.
+  default: False
+
+flag InternalChecks
+  description: Enable internal consistency checks at the cost of a
+               significant performance penalty.
+  default: False
+
+flag bench
+  description: Build a benchmarking program to test vector-algorithms
+               performance
+  default: True
+
+flag properties
+  description: Enable the quickcheck tests
+  default: True
+
+-- flag dump-simpl
+--   description: Dumps the simplified core during compilation
+--   default: False
+
+flag llvm
+  description: Build using llvm
+  default: False
+
+source-repository head
+  type:     git
+  location: https://github.com/erikd/vector-algorithms/
+
+library
+  hs-source-dirs: src
+  default-language: Haskell2010
+
+  build-depends: base >= 4.5 && < 5,
+                 vector >= 0.6 && < 0.14,
+                 primitive >=0.3 && <0.8,
+                 bytestring >= 0.9 && < 1.0
+
+  if ! impl (ghc >= 7.8)
+    build-depends: tagged >= 0.4 && < 0.9
+
+  exposed-modules:
+    Data.Vector.Algorithms.Optimal
+    Data.Vector.Algorithms.Insertion
+    Data.Vector.Algorithms.Intro
+    Data.Vector.Algorithms.Merge
+    Data.Vector.Algorithms.Radix
+    Data.Vector.Algorithms.Search
+    Data.Vector.Algorithms.Heap
+    Data.Vector.Algorithms.AmericanFlag
+    Data.Vector.Algorithms.Tim
+
+  other-modules:
+    Data.Vector.Algorithms.Common
+
+  ghc-options:
+    -funbox-strict-fields
+
+  -- Cabal/Hackage complains about these
+  -- if flag(dump-simpl)
+  --   ghc-options: -ddump-simpl -ddump-to-file
+
+  if flag(llvm)
+    ghc-options: -fllvm
+
+  include-dirs:
+    include
+
+  install-includes:
+    vector.h
+
+  if flag(BoundsChecks)
+    cpp-options: -DVECTOR_BOUNDS_CHECKS
+
+  if flag(UnsafeChecks)
+    cpp-options: -DVECTOR_UNSAFE_CHECKS
+
+  if flag(InternalChecks)
+    cpp-options: -DVECTOR_INTERNAL_CHECKS
+
+benchmark simple-bench
+  hs-source-dirs: bench/simple
+  type: exitcode-stdio-1.0
+  default-language: Haskell2010
+
+  if !flag(bench)
+    buildable: False
+
+  main-is: Main.hs
+
+  other-modules:
+    Blocks
+
+  build-depends: base, mwc-random, vector, vector-algorithms
+  ghc-options: -Wall
+
+  -- Cabal/Hackage complains about these
+  -- if flag(dump-simpl)
+  --   ghc-options: -ddump-simpl -ddump-to-file
+
+  if flag(llvm)
+    ghc-options: -fllvm
+
+test-suite properties
+  hs-source-dirs: tests/properties
+  type: exitcode-stdio-1.0
+  main-is: Tests.hs
+  default-language: Haskell2010
+
+  other-modules:
+    Optimal
+    Properties
+    Util
+
+  if !flag(properties)
+    buildable: False
+  else
+    build-depends:
+      base,
+      bytestring,
+      containers,
+      QuickCheck > 2.9 && < 2.15,
+      vector,
+      vector-algorithms
+
+  if flag(llvm)
+    ghc-options: -fllvm
+