diff --git a/Changes b/Changes
index c51bcce0e..80a43842f 100644
--- a/Changes
+++ b/Changes
@@ -2,6 +2,10 @@ Go to http://github.com/plack/Plack/issues for the roadmap and known issues.
 
 {{$NEXT}}
 
+1.0042  2016-09-28 22:37:33 PDT
+    [BUG FIXES]
+        - Revert: Allow passing an already-open listen socket to HTTP::Server::PSGI #550
+
 1.0041  2016-09-25 14:24:07 PDT
     [BUG FIXES]
         - Fix ConditionalGET middleware in case both Last-Modified and ETag exist. #569
diff --git a/META.json b/META.json
index eb1149afc..81d7be914 100644
--- a/META.json
+++ b/META.json
@@ -54,7 +54,7 @@
             "Hash::MultiValue" : "0.05",
             "Pod::Usage" : "1.36",
             "Stream::Buffered" : "0.02",
-            "Test::TCP" : "2.15",
+            "Test::TCP" : "2.00",
             "Try::Tiny" : "0",
             "URI" : "1.59",
             "WWW::Form::UrlEncoded" : "0.23",
@@ -105,7 +105,7 @@
          "web" : "https://github.com/plack/Plack"
       }
    },
-   "version" : "1.0041",
+   "version" : "1.0042",
    "x_authority" : "cpan:MIYAGAWA",
    "x_contributors" : [
       "Aaron Trevena <aaron.trevena@gmail.com>",
diff --git a/Makefile.PL b/Makefile.PL
index bfe4b353f..088c776a0 100644
--- a/Makefile.PL
+++ b/Makefile.PL
@@ -40,7 +40,7 @@ my %WriteMakefileArgs = (
     "Hash::MultiValue" => "0.05",
     "Pod::Usage" => "1.36",
     "Stream::Buffered" => "0.02",
-    "Test::TCP" => "2.15",
+    "Test::TCP" => "2.00",
     "Try::Tiny" => 0,
     "URI" => "1.59",
     "WWW::Form::UrlEncoded" => "0.23",
@@ -50,7 +50,7 @@ my %WriteMakefileArgs = (
     "Test::More" => "0.88",
     "Test::Requires" => 0
   },
-  "VERSION" => "1.0041",
+  "VERSION" => "1.0042",
   "test" => {
     "TESTS" => "t/*.t t/HTTP-Message-PSGI/*.t t/HTTP-Server-PSGI/*.t t/Plack-Builder/*.t t/Plack-HTTPParser-PP/*.t t/Plack-Handler/*.t t/Plack-Loader/*.t t/Plack-MIME/*.t t/Plack-Middleware/*.t t/Plack-Middleware/cascade/*.t t/Plack-Middleware/recursive/*.t t/Plack-Middleware/stacktrace/*.t t/Plack-Request/*.t t/Plack-Response/*.t t/Plack-Runner/*.t t/Plack-TempBuffer/*.t t/Plack-Test/*.t t/Plack-Util/*.t"
   }
@@ -73,7 +73,7 @@ my %FallbackPrereqs = (
   "Stream::Buffered" => "0.02",
   "Test::More" => "0.88",
   "Test::Requires" => 0,
-  "Test::TCP" => "2.15",
+  "Test::TCP" => "2.00",
   "Try::Tiny" => 0,
   "URI" => "1.59",
   "WWW::Form::UrlEncoded" => "0.23",
diff --git a/lib/Plack.pm b/lib/Plack.pm
index 36fe731fe..47c7b46a6 100644
--- a/lib/Plack.pm
+++ b/lib/Plack.pm
@@ -3,7 +3,7 @@ package Plack;
 use strict;
 use warnings;
 use 5.008_001;
-our $VERSION = '1.0041';
+our $VERSION = '1.0042';
 
 1;
 __END__
diff --git a/lib/Plack/Request.pm b/lib/Plack/Request.pm
index db5259503..ee965e410 100644
--- a/lib/Plack/Request.pm
+++ b/lib/Plack/Request.pm
@@ -2,7 +2,7 @@ package Plack::Request;
 use strict;
 use warnings;
 use 5.008_001;
-our $VERSION = '1.0041';
+our $VERSION = '1.0042';
 
 use HTTP::Headers::Fast;
 use Carp ();
diff --git a/lib/Plack/Response.pm b/lib/Plack/Response.pm
index e7414f4af..4dee05942 100644
--- a/lib/Plack/Response.pm
+++ b/lib/Plack/Response.pm
@@ -1,7 +1,7 @@
 package Plack::Response;
 use strict;
 use warnings;
-our $VERSION = '1.0041';
+our $VERSION = '1.0042';
 
 use Plack::Util::Accessor qw(body status);
 use Carp ();