diff --git a/configure.ac b/configure.ac
index 7af12d382..b90f165f5 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,8 +1,8 @@
 dnl require autoconf 2.60 (AS_ECHO/AS_ECHO_N)
 AC_PREREQ([2.60])
 define(_CLIENT_VERSION_MAJOR, 1)
-define(_CLIENT_VERSION_MINOR, 3)
-define(_CLIENT_VERSION_REVISION, 1)
+define(_CLIENT_VERSION_MINOR, 4)
+define(_CLIENT_VERSION_REVISION, 0)
 define(_CLIENT_VERSION_BUILD, 51)
 define(_ZC_BUILD_VAL, m4_if(m4_eval(_CLIENT_VERSION_BUILD < 25), 1, m4_incr(_CLIENT_VERSION_BUILD), m4_eval(_CLIENT_VERSION_BUILD < 50), 1, m4_eval(_CLIENT_VERSION_BUILD - 24), m4_eval(_CLIENT_VERSION_BUILD == 50), 1, , m4_eval(_CLIENT_VERSION_BUILD - 50)))
 define(_CLIENT_VERSION_SUFFIX, m4_if(m4_eval(_CLIENT_VERSION_BUILD < 25), 1, _CLIENT_VERSION_REVISION-beta$1, m4_eval(_CLIENT_VERSION_BUILD < 50), 1, _CLIENT_VERSION_REVISION-rc$1, m4_eval(_CLIENT_VERSION_BUILD == 50), 1, _CLIENT_VERSION_REVISION, _CLIENT_VERSION_REVISION-$1)))
diff --git a/contrib/debian/changelog b/contrib/debian/changelog
index c6509473d..d41c80a73 100644
--- a/contrib/debian/changelog
+++ b/contrib/debian/changelog
@@ -1,5 +1,5 @@
-bitcoinz (1.3.0) stable; urgency=medium
+bitcoinz (1.4.0) stable; urgency=high
 
-  * 1.3.0 release.
+  * 1.4.0 release.
 
- -- The BitcoinZ Community <bitcoinzcommunity@gmail.com>  Sat, 10 June 2018 00:15:00 +0100
+ -- The BitcoinZ Community <bitcoinzcommunity@gmail.com>  Fri, 15 June 2018 00:15:00 +0100
diff --git a/contrib/debian/control b/contrib/debian/control
index b1ba34bc7..30ae24bf1 100644
--- a/contrib/debian/control
+++ b/contrib/debian/control
@@ -11,7 +11,7 @@ Vcs-Git: https://github.com/btcz/bitcoinz.git
 Vcs-Browser: https://github.com/btcz
 
 Package: bitcoinz
-Version: 1.3.0
+Version: 1.4.0
 Depends: ${shlibs:Depends}
 Architecture: all
 Description: BitcoinZ is a decentralized community project based on the Bitcoin and Zcash codebase.
diff --git a/contrib/gitian-descriptors/gitian-linux.yml b/contrib/gitian-descriptors/gitian-linux.yml
index bc4f2100a..5d860368b 100644
--- a/contrib/gitian-descriptors/gitian-linux.yml
+++ b/contrib/gitian-descriptors/gitian-linux.yml
@@ -1,5 +1,5 @@
 ---
-name: "bitcoinz-1.3.0"
+name: "bitcoinz-1.4.0"
 enable_cache: true
 distro: "debian"
 suites:
diff --git a/doc/man/bitcoinz-cli.1 b/doc/man/bitcoinz-cli.1
index 7613fac89..12cf63099 100644
--- a/doc/man/bitcoinz-cli.1
+++ b/doc/man/bitcoinz-cli.1
@@ -1,9 +1,9 @@
 .\" DO NOT MODIFY THIS FILE!  It was generated by help2man 1.47.3.
-.TH BITCOINZ-CLI "1" "June 2018" "bitcoinz-cli v1.3.0" "User Commands"
+.TH BITCOINZ-CLI "1" "June 2018" "bitcoinz-cli v1.4.0" "User Commands"
 .SH NAME
-bitcoinz-cli \- manual page for bitcoinz-cli v1.3.0
+bitcoinz-cli \- manual page for bitcoinz-cli v1.4.0
 .SH DESCRIPTION
-BitcoinZ RPC client version v1.3.0
+BitcoinZ RPC client version v1.4.0
 .PP
 In order to ensure you are adequately protecting your privacy when using
 BitcoinZ, please see <https://z.cash/support/security/index.html>.
diff --git a/doc/man/bitcoinz-tx.1 b/doc/man/bitcoinz-tx.1
index 2d7e271d0..a00843dfc 100644
--- a/doc/man/bitcoinz-tx.1
+++ b/doc/man/bitcoinz-tx.1
@@ -1,9 +1,9 @@
 .\" DO NOT MODIFY THIS FILE!  It was generated by help2man 1.47.3.
-.TH BITCOINZ-TX "1" "June 2018" "bitcoinz-tx v1.3.0" "User Commands"
+.TH BITCOINZ-TX "1" "June 2018" "bitcoinz-tx v1.4.0" "User Commands"
 .SH NAME
-bitcoinz-tx \- manual page for bitcoinz-tx v1.3.0
+bitcoinz-tx \- manual page for bitcoinz-tx v1.4.0
 .SH DESCRIPTION
-BitcoinZ bitcoinz\-tx utility version v1.3.0
+BitcoinZ bitcoinz\-tx utility version v1.4.0
 .SS "Usage:"
 .TP
 bitcoinz\-tx [options] <hex\-tx> [commands]
diff --git a/doc/man/bitcoinzd.1 b/doc/man/bitcoinzd.1
index 53c7fd92c..c698e911d 100644
--- a/doc/man/bitcoinzd.1
+++ b/doc/man/bitcoinzd.1
@@ -1,9 +1,9 @@
 .\" DO NOT MODIFY THIS FILE!  It was generated by help2man 1.47.3.
-.TH BITCOINZD "1" "June 2018" "bitcoinzd v1.3.0" "User Commands"
+.TH BITCOINZD "1" "June 2018" "bitcoinzd v1.4.0" "User Commands"
 .SH NAME
-bitcoinzd \- manual page for bitcoinzd v1.3.0
+bitcoinzd \- manual page for bitcoinzd v1.4.0
 .SH DESCRIPTION
-BitcoinZ Daemon version v1.3.0
+BitcoinZ Daemon version v1.4.0
 .PP
 In order to ensure you are adequately protecting your privacy when using
 BitcoinZ, please see <https://z.cash/support/security/>.
diff --git a/src/clientversion.h b/src/clientversion.h
index 03903b7cb..bad31e66c 100644
--- a/src/clientversion.h
+++ b/src/clientversion.h
@@ -17,7 +17,7 @@
 
 //! These need to be macros, as clientversion.cpp's and bitcoin*-res.rc's voodoo requires it
 #define CLIENT_VERSION_MAJOR 1
-#define CLIENT_VERSION_MINOR 3
+#define CLIENT_VERSION_MINOR 4
 #define CLIENT_VERSION_REVISION 0
 #define CLIENT_VERSION_BUILD 51
 
diff --git a/src/main.cpp b/src/main.cpp
index ed564c007..7dd0d9d35 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -3010,7 +3010,7 @@ bool CheckBlockHeader(const CBlockHeader& block, CValidationState& state, bool f
         return state.Invalid(error("CheckBlockHeader(): block timestamp too far in the future"),
                              REJECT_INVALID, "time-too-new");
 
-    // starting at height 158750, decrease to 30 minute window to decrease effectiveness of timewarp attack.
+    // starting at height 159300, decrease to 30 minute window to decrease effectiveness of timewarp attack.
     else if (nHeight >= chainParams.GetNewTimeRule() && block.GetBlockTime() > GetAdjustedTime() + 30 * 60)
         return state.Invalid(error("CheckBlockHeader(): block timestamp too far in the future"),
                              REJECT_INVALID, "time-too-new");