diff --git a/pkgs/development/perl-modules/perl-POE-1.367-pod_linkcheck.patch b/pkgs/development/perl-modules/perl-POE-1.367-pod_linkcheck.patch
deleted file mode 100644
index e2f604985be..00000000000
--- a/pkgs/development/perl-modules/perl-POE-1.367-pod_linkcheck.patch
+++ /dev/null
@@ -1,40 +0,0 @@
-commit 6d985026
-Author: Michael Brantley <limeytexan@gmail.com>
-Date:   Tue Feb 20 07:12:06 2018 -0500
-
-    Update broken Pod links in lib/POE/Filter/HTTPD.pm
-    
-    Update Pod links to refer only to the utf8 module and not its methods,
-    fix a mis-capitalized internal reference, and convert the dangling
-    "MaxContent" link into a code reference.
-    
-    Resolves bug: https://rt.cpan.org/Public/Bug/Display.html?id=124496
-
-diff --git a/lib/POE/Filter/HTTPD.pm b/lib/POE/Filter/HTTPD.pm
-index 9d4898e3..517be691 100644
---- a/lib/POE/Filter/HTTPD.pm
-+++ b/lib/POE/Filter/HTTPD.pm
-@@ -621,10 +621,10 @@ how to use these objects.
- 
- HTTP headers are not allowed to have UTF-8 characters; they must be
- ISO-8859-1.  POE::Filter::HTTPD will convert all UTF-8 into the MIME encoded
--equivalent.  It uses L<utf8::is_utf8> for detection-8 and
-+equivalent.  It uses C<utf8::is_utf8> for detection-8 and
- L<Email::MIME::RFC2047::Encoder> for convertion.  If L<utf8> is not
- installed, no conversion happens.  If L<Email::MIME::RFC2047::Encoder> is
--not installed, L<utf8::downgrade> is used instead.  In this last case, you will
-+not installed, C<utf8::downgrade> is used instead.  In this last case, you will
- see a warning if you try to send UTF-8 headers.
- 
- 
-@@ -651,8 +651,8 @@ streaming mode this filter will return either an HTTP::Request object or a
- block of content.  The HTTP::Request object's content will return empty. 
- The blocks of content will be parts of the request's body, up to
- Content-Length in size.  You distinguish between request objects and content
--blocks using C<Scalar::Util/bless> (See L</Streaming request> below).  This
--option supersedes L</MaxContent>.
-+blocks using C<Scalar::Util/bless> (See L</Streaming Request> below).  This
-+option supersedes C<MaxContent>.
- 
- =head1 CAVEATS
- 
diff --git a/pkgs/development/perl-modules/perl-POE-1.367-pod_no404s.patch b/pkgs/development/perl-modules/perl-POE-1.367-pod_no404s.patch
deleted file mode 100644
index 097a7677e51..00000000000
--- a/pkgs/development/perl-modules/perl-POE-1.367-pod_no404s.patch
+++ /dev/null
@@ -1,46 +0,0 @@
-commit 32571a21
-Author: Michael Brantley <limeytexan@gmail.com>
-Date:   Tue Feb 20 07:07:22 2018 -0500
-
-    Update old URLs referenced in Pod
-    
-    Remove mention of old URLs, replace mention of canonical SVN repo with
-    the new git-based one at github.com.
-    
-    Resolves bug: https://rt.cpan.org/Public/Bug/Display.html?id=124495
-
-diff --git a/lib/POE.pm b/lib/POE.pm
-index 80e7feac..0554ff70 100644
---- a/lib/POE.pm
-+++ b/lib/POE.pm
-@@ -465,7 +465,7 @@ code snippets there as well.
- The following command will fetch the most current version of POE into
- the "poe" subdirectory:
- 
--  svn co https://poe.svn.sourceforge.net/svnroot/poe poe
-+  git clone https://github.com/rcaputo/poe.git
- 
- =head2 SourceForge
- 
-@@ -535,18 +535,9 @@ https://rt.cpan.org/Dist/Display.html?Status=Active&Queue=POE
- 
- =head2 Repositories and Changes
- 
--Thanks to the magic of distributed version control, POE is hosted at
--three locations for redundancy.  You can browse the source at any one
--of:
--
--https://github.com/rcaputo/poe
--
--https://gitorious.org/poe
--
--http://poe.git.sourceforge.net/git/gitweb-index.cgi
--
--Complete change logs can also be browsed at those sites.  They all
--provide RSS news feeds for those who want to follow development in
-+You can browse the POE source and complete change logs at
-+https://github.com/rcaputo/poe. It also provides an RSS
-+news feed for those who want to follow development in
- near-realtime.
- 
- =head2 Other Resources
diff --git a/pkgs/top-level/perl-packages.nix b/pkgs/top-level/perl-packages.nix
index 84c3f908f8b..32eab561a21 100644
--- a/pkgs/top-level/perl-packages.nix
+++ b/pkgs/top-level/perl-packages.nix
@@ -15405,10 +15405,6 @@ let
   POE = buildPerlPackage {
     pname = "POE";
     version = "1.368";
-    patches = [
-      ../development/perl-modules/perl-POE-1.367-pod_linkcheck.patch
-      ../development/perl-modules/perl-POE-1.367-pod_no404s.patch
-    ];
     src = fetchurl {
       url = mirror://cpan/authors/id/B/BI/BINGOS/POE-1.368.tar.gz;
       sha256 = "08g1vzxamqg0gmkirdcx7fycq3pwv9vbajc30qwqpm1n3rvdrcdp";
@@ -16521,7 +16517,7 @@ let
       url = mirror://cpan/authors/id/Y/YV/YVES/Sereal-4.014.tar.gz;
       sha256 = "02qpl3x6sh0xfby38gr80dndkah9m5r0xhk7d4a24i9hqljjaing";
     };
-    buildInputs = [ TestLongString TestWarn ];
+    buildInputs = [ TestDeep TestLongString TestMemoryGrowth TestWarn ];
     propagatedBuildInputs = [ SerealDecoder SerealEncoder ];
     meta = {
       homepage = "https://github.com/Sereal/Sereal";