diff --git a/ghc-hedgehog.changes b/ghc-hedgehog.changes
index 28c1371..10829d9 100644
--- a/ghc-hedgehog.changes
+++ b/ghc-hedgehog.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Fri Sep 10 08:13:36 UTC 2021 - psimons@suse.com
+
+- Update hedgehog to version 1.0.5 revision 1.
+  Upstream has revised the Cabal build instructions on Hackage.
+
 -------------------------------------------------------------------
 Tue Aug 17 15:23:29 UTC 2021 - Ondřej Súkup <mimi.vx@gmail.com>
 
diff --git a/ghc-hedgehog.spec b/ghc-hedgehog.spec
index acae0a7..948a0c2 100644
--- a/ghc-hedgehog.spec
+++ b/ghc-hedgehog.spec
@@ -25,6 +25,7 @@ Summary:        Release with confidence
 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-ansi-terminal-devel
 BuildRequires:  ghc-async-devel
@@ -77,7 +78,8 @@ This package provides the Haskell %{pkg_name} library development files.
 
 %prep
 %autosetup -n %{pkg_name}-%{version}
-cabal-tweak-dep-ver mmorph '< 1.2' '< 1.3'
+cp -p %{SOURCE1} %{pkg_name}.cabal
+cabal-tweak-dep-ver 'mmorph' '< 1.2' '< 1.3'
 
 %build
 %ghc_lib_build
diff --git a/hedgehog.cabal b/hedgehog.cabal
new file mode 100644
index 0000000..517d636
--- /dev/null
+++ b/hedgehog.cabal
@@ -0,0 +1,151 @@
+version: 1.0.5
+x-revision: 1
+
+name:
+  hedgehog
+author:
+  Jacob Stanley
+maintainer:
+  Jacob Stanley <jacob@stanley.io>
+homepage:
+  https://hedgehog.qa
+bug-reports:
+  https://github.com/hedgehogqa/haskell-hedgehog/issues
+synopsis:
+  Release with confidence.
+description:
+  <http://hedgehog.qa/ Hedgehog> automatically generates a comprehensive array
+  of test cases, exercising your software in ways human testers would never
+  imagine.
+  .
+  Generate hundreds of test cases automatically, exposing even the
+  most insidious of corner cases. Failures are automatically simplified, giving
+  developers coherent, intelligible error messages.
+  .
+  To get started quickly, see the <https://github.com/hedgehogqa/haskell-hedgehog/tree/master/hedgehog-example examples>.
+category:
+  Testing
+license:
+  BSD3
+license-file:
+  LICENSE
+cabal-version:
+  >= 1.10
+build-type:
+  Simple
+tested-with:
+    GHC == 8.0.2
+  , GHC == 8.2.2
+  , GHC == 8.4.4
+  , GHC == 8.6.5
+  , GHC == 8.8.3
+  , GHC == 8.10.1
+extra-source-files:
+  README.md
+  CHANGELOG.md
+
+source-repository head
+  type: git
+  location: git://github.com/hedgehogqa/haskell-hedgehog.git
+
+library
+  build-depends:
+   -- GHC 8.0.1 / base-4.9.0.0 (May 2016)
+      base                            >= 4.9        && < 5
+    , ansi-terminal                   >= 0.6        && < 0.12
+    , async                           >= 2.0        && < 2.3
+    , bytestring                      >= 0.10       && < 0.12
+    , concurrent-output               >= 1.7        && < 1.11
+    , containers                      >= 0.4        && < 0.7
+    , deepseq                         >= 1.1.0.0    && < 1.5
+    , directory                       >= 1.2        && < 1.4
+    , erf                             >= 2.0        && < 2.1
+    , exceptions                      >= 0.7        && < 0.11
+    , lifted-async                    >= 0.7        && < 0.11
+    , mmorph                          >= 1.0        && < 1.2
+    , monad-control                   >= 1.0        && < 1.1
+    , mtl                             >= 2.1        && < 2.3
+    , pretty-show                     >= 1.6        && < 1.11
+    , primitive                       >= 0.6        && < 0.8
+    , random                          >= 1.1        && < 1.3
+    , resourcet                       >= 1.1        && < 1.3
+    , stm                             >= 2.4        && < 2.6
+    , template-haskell                >= 2.10       && < 2.18
+    , text                            >= 1.1        && < 1.3
+    , time                            >= 1.4        && < 1.13
+    , transformers                    >= 0.5        && < 0.6
+    , transformers-base               >= 0.4.5.1    && < 0.5
+    , wl-pprint-annotated             >= 0.0        && < 0.2
+
+  ghc-options:
+    -Wall
+
+  hs-source-dirs:
+    src
+
+  exposed-modules:
+    Hedgehog
+    Hedgehog.Gen
+    Hedgehog.Main
+    Hedgehog.Range
+
+    Hedgehog.Internal.Config
+    Hedgehog.Internal.Discovery
+    Hedgehog.Internal.Distributive
+    Hedgehog.Internal.Exception
+    Hedgehog.Internal.Gen
+    Hedgehog.Internal.HTraversable
+    Hedgehog.Internal.Opaque
+    Hedgehog.Internal.Prelude
+    Hedgehog.Internal.Property
+    Hedgehog.Internal.Queue
+    Hedgehog.Internal.Range
+    Hedgehog.Internal.Region
+    Hedgehog.Internal.Report
+    Hedgehog.Internal.Runner
+    Hedgehog.Internal.Seed
+    Hedgehog.Internal.Show
+    Hedgehog.Internal.Shrink
+    Hedgehog.Internal.Source
+    Hedgehog.Internal.State
+    Hedgehog.Internal.TH
+    Hedgehog.Internal.Tree
+    Hedgehog.Internal.Tripping
+
+  default-language:
+    Haskell2010
+
+test-suite test
+  type:
+    exitcode-stdio-1.0
+
+  main-is:
+    test.hs
+
+  ghc-options:
+    -Wall -threaded -O2
+
+  hs-source-dirs:
+    test
+
+  other-modules:
+    Test.Hedgehog.Applicative
+    Test.Hedgehog.Confidence
+    Test.Hedgehog.Filter
+    Test.Hedgehog.Maybe
+    Test.Hedgehog.Seed
+    Test.Hedgehog.Text
+    Test.Hedgehog.Zip
+
+  build-depends:
+      hedgehog
+    , base                            >= 3          && < 5
+    , containers                      >= 0.4        && < 0.7
+    , mmorph                          >= 1.0        && < 1.2
+    , mtl                             >= 2.1        && < 2.3
+    , pretty-show                     >= 1.6        && < 1.11
+    , text                            >= 1.1        && < 1.3
+    , transformers                    >= 0.3        && < 0.6
+
+  default-language:
+    Haskell2010