diff --git a/cassava.cabal b/cassava.cabal
index ae2f503..410d2f4 100644
--- a/cassava.cabal
+++ b/cassava.cabal
@@ -1,7 +1,7 @@
 cabal-version:       1.12
 Name:                cassava
 Version:             0.5.2.0
-x-revision:          3
+x-revision: 4
 Synopsis:            A CSV parsing and encoding library
 Description: {
 
@@ -96,7 +96,7 @@ Library
 
   Build-depends:
     array >= 0.4 && < 0.6,
-    attoparsec >= 0.11.3.0 && < 0.14,
+    attoparsec >= 0.11.3.0 && < 0.15,
     base >= 4.5 && < 4.16,
     bytestring >= 0.9.2 && < 0.12,
     containers >= 0.4.2 && < 0.7,
diff --git a/ghc-cassava.changes b/ghc-cassava.changes
index 168889d..d0fa1d2 100644
--- a/ghc-cassava.changes
+++ b/ghc-cassava.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Tue Mar 23 15:12:11 UTC 2021 - psimons@suse.com
+
+- Update cassava to version 0.5.2.0 revision 4.
+  Upstream has revised the Cabal build instructions on Hackage.
+
 -------------------------------------------------------------------
 Tue Mar  2 09:34:41 UTC 2021 - psimons@suse.com
 
diff --git a/ghc-cassava.spec b/ghc-cassava.spec
index efe08f9..a264695 100644
--- a/ghc-cassava.spec
+++ b/ghc-cassava.spec
@@ -25,7 +25,7 @@ Summary:        A CSV parsing and encoding library
 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/3.cabal#/%{pkg_name}.cabal
+Source1:        https://hackage.haskell.org/package/%{pkg_name}-%{version}/revision/4.cabal#/%{pkg_name}.cabal
 BuildRequires:  ghc-Cabal-devel
 BuildRequires:  ghc-Only-devel
 BuildRequires:  ghc-array-devel