diff --git a/.CHANGES.NEW b/.CHANGES.NEW
index d24d6278c..5cb08b1ef 100644
--- a/.CHANGES.NEW
+++ b/.CHANGES.NEW
@@ -7,7 +7,7 @@
  \___/|_| |_|_|  \___|\__,_|_|\___/\_| \_| \____/\__,_|
 
                                Configuration Program
-                                for UnrealIRCd 4.2.0
+                                for UnrealIRCd 4.2.1-dev
                                     
 This program will help you to compile your IRC server, and ask you
 questions regarding the compile-time settings of it during the process. 
diff --git a/configure b/configure
index 92fc20bd6..bec217328 100755
--- a/configure
+++ b/configure
@@ -1,6 +1,6 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.69 for unrealircd 4.2.0.
+# Generated by GNU Autoconf 2.69 for unrealircd 4.2.1-dev.
 #
 # Report bugs to <http://bugs.unrealircd.org/>.
 #
@@ -580,8 +580,8 @@ MAKEFLAGS=
 # Identity of this package.
 PACKAGE_NAME='unrealircd'
 PACKAGE_TARNAME='unrealircd'
-PACKAGE_VERSION='4.2.0'
-PACKAGE_STRING='unrealircd 4.2.0'
+PACKAGE_VERSION='4.2.1-dev'
+PACKAGE_STRING='unrealircd 4.2.1-dev'
 PACKAGE_BUGREPORT='http://bugs.unrealircd.org/'
 PACKAGE_URL='http://unrealircd.org/'
 
@@ -1336,7 +1336,7 @@ if test "$ac_init_help" = "long"; then
   # Omit some internal or obsolete options to make the list less imposing.
   # This message is too long to be a string in the A/UX 3.1 sh.
   cat <<_ACEOF
-\`configure' configures unrealircd 4.2.0 to adapt to many kinds of systems.
+\`configure' configures unrealircd 4.2.1-dev to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1402,7 +1402,7 @@ fi
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of unrealircd 4.2.0:";;
+     short | recursive ) echo "Configuration of unrealircd 4.2.1-dev:";;
    esac
   cat <<\_ACEOF
 
@@ -1561,7 +1561,7 @@ fi
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
-unrealircd configure 4.2.0
+unrealircd configure 4.2.1-dev
 generated by GNU Autoconf 2.69
 
 Copyright (C) 2012 Free Software Foundation, Inc.
@@ -2167,7 +2167,7 @@ cat >config.log <<_ACEOF
 This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.
 
-It was created by unrealircd $as_me 4.2.0, which was
+It was created by unrealircd $as_me 4.2.1-dev, which was
 generated by GNU Autoconf 2.69.  Invocation command line was
 
   $ $0 $@
@@ -2576,7 +2576,7 @@ _ACEOF
 
 
 # Minor version number (e.g.: Z in X.Y.Z)
-UNREAL_VERSION_MINOR="0"
+UNREAL_VERSION_MINOR="1"
 
 cat >>confdefs.h <<_ACEOF
 #define UNREAL_VERSION_MINOR $UNREAL_VERSION_MINOR
@@ -2586,7 +2586,7 @@ _ACEOF
 # The version suffix such as a beta marker or release candidate
 # marker. (e.g.: -rcX for unrealircd-3.2.9-rcX). This macro is a
 # string instead of an integer because it contains arbitrary data.
-UNREAL_VERSION_SUFFIX=""
+UNREAL_VERSION_SUFFIX="-dev"
 
 cat >>confdefs.h <<_ACEOF
 #define UNREAL_VERSION_SUFFIX "$UNREAL_VERSION_SUFFIX"
@@ -9456,7 +9456,7 @@ cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
 # report actual input values of CONFIG_FILES etc. instead of their
 # values after options handling.
 ac_log="
-This file was extended by unrealircd $as_me 4.2.0, which was
+This file was extended by unrealircd $as_me 4.2.1-dev, which was
 generated by GNU Autoconf 2.69.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
@@ -9519,7 +9519,7 @@ _ACEOF
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 ac_cs_config="`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`"
 ac_cs_version="\\
-unrealircd config.status 4.2.0
+unrealircd config.status 4.2.1-dev
 configured by $0, generated by GNU Autoconf 2.69,
   with options \\"\$ac_cs_config\\"
 
diff --git a/configure.ac b/configure.ac
index 411a7b147..cf88e3995 100644
--- a/configure.ac
+++ b/configure.ac
@@ -8,7 +8,7 @@ dnl src/win32/unrealinst.iss
 dnl .CHANGES.NEW
 dnl src/version.c.SH
 
-AC_INIT([unrealircd], [4.2.0], [http://bugs.unrealircd.org/], [], [http://unrealircd.org/])
+AC_INIT([unrealircd], [4.2.1-dev], [http://bugs.unrealircd.org/], [], [http://unrealircd.org/])
 AC_CONFIG_SRCDIR([src/ircd.c])
 AC_CONFIG_HEADER([include/setup.h])
 AC_CONFIG_AUX_DIR([autoconf])
@@ -36,13 +36,13 @@ UNREAL_VERSION_MAJOR=["2"]
 AC_DEFINE_UNQUOTED([UNREAL_VERSION_MAJOR], [$UNREAL_VERSION_MAJOR], [Major version number (e.g.: Y for X.Y.Z)])
 
 # Minor version number (e.g.: Z in X.Y.Z)
-UNREAL_VERSION_MINOR=["0"]
+UNREAL_VERSION_MINOR=["1"]
 AC_DEFINE_UNQUOTED([UNREAL_VERSION_MINOR], [$UNREAL_VERSION_MINOR], [Minor version number (e.g.: Z for X.Y.Z)])
 
 # The version suffix such as a beta marker or release candidate
 # marker. (e.g.: -rcX for unrealircd-3.2.9-rcX). This macro is a
 # string instead of an integer because it contains arbitrary data.
-UNREAL_VERSION_SUFFIX=[""]
+UNREAL_VERSION_SUFFIX=["-dev"]
 AC_DEFINE_UNQUOTED([UNREAL_VERSION_SUFFIX], ["$UNREAL_VERSION_SUFFIX"], [Version suffix such as a beta marker or release candidate marker. (e.g.: -rcX for unrealircd-3.2.9-rcX)])
 
 AC_PROG_CC
diff --git a/doc/RELEASE-NOTES b/doc/RELEASE-NOTES
index d371951e3..99c7f635e 100644
--- a/doc/RELEASE-NOTES
+++ b/doc/RELEASE-NOTES
@@ -1,4 +1,4 @@
-UnrealIRCd 4.2.0 Release Notes
+UnrealIRCd 4.2.1-dev Release Notes
 ===============================
 
 There have been so many changes in this and the last few 4.0.x versions,
diff --git a/include/version.h b/include/version.h
index b91d122d9..242944ec7 100644
--- a/include/version.h
+++ b/include/version.h
@@ -56,7 +56,7 @@
  */
 #define UNREAL_VERSION_TIME         201818
 
-#define UnrealProtocol 		4200
+#define UnrealProtocol 		4201
 #define PATCH1  		macro_to_str(UNREAL_VERSION_GENERATION)
 #define PATCH2  		"." macro_to_str(UNREAL_VERSION_MAJOR)
 #define PATCH3  		"." macro_to_str(UNREAL_VERSION_MINOR)
diff --git a/include/win32/setup.h b/include/win32/setup.h
index 536574e92..f5bbd990a 100644
--- a/include/win32/setup.h
+++ b/include/win32/setup.h
@@ -84,10 +84,10 @@
 #define UNREAL_VERSION_MAJOR 2
 
 /* Minor version number (e.g.: 1 for Unreal3.2.1) */
-#define UNREAL_VERSION_MINOR 0
+#define UNREAL_VERSION_MINOR 1
 
 /* Version suffix such as a beta marker or release candidate marker. (e.g.:
    -rcX for unrealircd-3.2.9-rcX) */
-#define UNREAL_VERSION_SUFFIX ""
+#define UNREAL_VERSION_SUFFIX "-dev"
 
 #endif
diff --git a/src/version.c.SH b/src/version.c.SH
index 70b52a2dd..8ed62e633 100644
--- a/src/version.c.SH
+++ b/src/version.c.SH
@@ -4,7 +4,7 @@ echo "Extracting src/version.c..."
 
 #id=`grep '$Id: Changes,v' ../Changes`
 #id=`echo $id |sed 's/.* Changes\,v \(.*\) .* Exp .*/\1/'`
-id="4.2.0"
+id="4.2.1-dev"
 echo "$id"
 
 if test -r version.c
diff --git a/src/win32/UnrealIRCd.exe.manifest b/src/win32/UnrealIRCd.exe.manifest
index efc8674b3..444076a16 100644
--- a/src/win32/UnrealIRCd.exe.manifest
+++ b/src/win32/UnrealIRCd.exe.manifest
@@ -3,7 +3,7 @@
 <assemblyIdentity
     processorArchitecture="X86"
     name="UnrealIRCd.UnrealIRCd.4"
-    version="4.2.0.0"
+    version="4.2.1.0"
     type="win32"
 />
 <description>Internet Relay Chat Daemon</description>
diff --git a/src/win32/unrealinst.iss b/src/win32/unrealinst.iss
index 5564595cf..c3e2e5301 100644
--- a/src/win32/unrealinst.iss
+++ b/src/win32/unrealinst.iss
@@ -6,7 +6,7 @@
 
 [Setup]
 AppName=UnrealIRCd 4
-AppVerName=UnrealIRCd 4.2.0
+AppVerName=UnrealIRCd 4.2.1-dev
 AppPublisher=UnrealIRCd Team
 AppPublisherURL=https://www.unrealircd.org
 AppSupportURL=https://www.unrealircd.org