diff --git a/Readonly-2.01-interpreter.patch b/Readonly-2.04-interpreter.patch
similarity index 94%
rename from Readonly-2.01-interpreter.patch
rename to Readonly-2.04-interpreter.patch
index 52aec37..780e29e 100644
--- a/Readonly-2.01-interpreter.patch
+++ b/Readonly-2.04-interpreter.patch
@@ -22,6 +22,14 @@
  
  # Readonly array tests
  
+--- t/general/clone.t
++++ t/general/clone.t
+@@ -1,4 +1,4 @@
+-#!perl -I../../lib
++#!/usr/bin/perl -I../../lib
+ 
+ # Readonly clone tests
+ 
 --- t/general/deepa.t
 +++ t/general/deepa.t
 @@ -1,4 +1,4 @@
diff --git a/perl-Readonly.spec b/perl-Readonly.spec
index a0ad680..6777054 100644
--- a/perl-Readonly.spec
+++ b/perl-Readonly.spec
@@ -1,12 +1,12 @@
 Name:		perl-Readonly
-Version:	2.01
+Version:	2.04
 Release:	1%{?dist}
 Summary:	Facility for creating read-only scalars, arrays, hashes
 Group:		Development/Libraries
 License:	GPL+ or Artistic
 URL:		http://search.cpan.org/dist/Readonly/
 Source0:	http://search.cpan.org/CPAN/authors/id/S/SA/SANKO/Readonly-%{version}.tar.gz
-Patch0:		Readonly-2.01-interpreter.patch
+Patch0:		Readonly-2.04-interpreter.patch
 BuildArch:	noarch
 # Module Build
 BuildRequires:	coreutils
@@ -15,6 +15,7 @@ BuildRequires:	perl(Module::Build::Tiny) >= 0.035
 # Module Runtime
 BuildRequires:	perl(Carp)
 BuildRequires:	perl(Exporter)
+BuildRequires:	perl(Storable)
 BuildRequires:	perl(strict)
 BuildRequires:	perl(vars)
 # Test Suite
@@ -23,6 +24,7 @@ BuildRequires:	perl(Test::More)
 # Runtime
 Requires:	perl(:MODULE_COMPAT_%(eval "`perl -V:version`"; echo $version))
 Requires:	perl(Carp)
+Requires:	perl(Storable)
 
 %description
 Readonly provides a facility for creating non-modifiable scalars,
@@ -60,6 +62,16 @@ perl Build.PL --installdirs=vendor
 %{_mandir}/man3/Readonly.3pm*
 
 %changelog
+* Sat May  7 2016 Paul Howarth <paul@city-fan.org> - 2.04-1
+- Update to 2.04
+  - Create mutable clones of readonly structures with Readonly::Clone (GH#13)
+  - Minor typo fix (GH#21)
+  - Rewording some documentation
+  - No longer require an explicit version of perl in META.json or cpanfile
+  - Quiet compile time warnings about function prototypes and vars being used
+    only once
+- Update interpreter patch
+
 * Thu Feb 25 2016 Paul Howarth <paul@city-fan.org> - 2.01-1
 - Update to 2.01
   - Disallow initialization of Readonly variables by assignment, allowed by
diff --git a/sources b/sources
index 9ade705..122d5e8 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-952c6af2770ccbabcd01702aa0fada70  Readonly-2.01.tar.gz
+9af69a0c2d64f5bd382d926be837a19d  Readonly-2.04.tar.gz