diff --git a/dec.cabal b/dec.cabal
index b0fcd5c..2dffecd 100644
--- a/dec.cabal
+++ b/dec.cabal
@@ -1,7 +1,7 @@
 cabal-version:      >=1.10
 name:               dec
 version:            0.0.5
-x-revision:         1
+x-revision:         2
 synopsis:           Decidable propositions.
 category:           Data, Dependent Types
 description:
@@ -34,9 +34,10 @@ tested-with:
    || ==8.8.4
    || ==8.10.7
    || ==9.0.2
-   || ==9.2.6
-   || ==9.4.4
-   || ==9.6.1
+   || ==9.2.8
+   || ==9.4.7
+   || ==9.6.3
+   || ==9.8.1
 
 source-repository head
   type:     git
@@ -48,7 +49,7 @@ library
   ghc-options:      -Wall -fprint-explicit-kinds
   exposed-modules:  Data.Type.Dec
   build-depends:
-      base    >=4.7 && <4.19
+      base    >=4.7 && <4.20
     , boring  >=0.2 && <0.3
 
   if !impl(ghc >=7.10)
diff --git a/ghc-dec.changes b/ghc-dec.changes
index 0412c7d..b99f72f 100644
--- a/ghc-dec.changes
+++ b/ghc-dec.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Tue Oct 24 16:57:16 UTC 2023 - Peter Simons <psimons@suse.com>
+
+- Update dec to version 0.0.5 revision 2.
+  Upstream has revised the Cabal build instructions on Hackage.
+
 -------------------------------------------------------------------
 Thu Mar 30 17:06:34 UTC 2023 - Peter Simons <psimons@suse.com>
 
diff --git a/ghc-dec.spec b/ghc-dec.spec
index 3a44d9c..ca4982a 100644
--- a/ghc-dec.spec
+++ b/ghc-dec.spec
@@ -25,7 +25,7 @@ Summary:        Decidable propositions
 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
+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