diff --git a/configure.ac b/configure.ac
index 66aadd68..9c09f500 100644
--- a/configure.ac
+++ b/configure.ac
@@ -22,8 +22,8 @@ AC_CONFIG_SRCDIR([src/encmain.c])
 #   - Increment when making new releases and major or minor was not changed since last release.
 #
 # Here is a somewhat sane guide to lib versioning: http://apr.apache.org/versioning.html
-ver_major=3
-ver_minor=15
+ver_major=4
+ver_minor=0
 ver_release=0
 
 # Prevents configure from adding a lot of defines to the CFLAGS
diff --git a/doc/kvazaar.1 b/doc/kvazaar.1
index 4b30c7ed..7b234b9b 100644
--- a/doc/kvazaar.1
+++ b/doc/kvazaar.1
@@ -1,4 +1,4 @@
-.TH KVAZAAR "1" "April 2017" "kvazaar v1.1.0" "User Commands"
+.TH KVAZAAR "1" "November 2017" "kvazaar v1.2.0" "User Commands"
 .SH NAME
 kvazaar \- open source HEVC encoder
 .SH SYNOPSIS
diff --git a/src/global.h b/src/global.h
index 5c76cc73..afed177b 100644
--- a/src/global.h
+++ b/src/global.h
@@ -200,7 +200,7 @@ typedef int16_t coeff_t;
 // NOTE: When making a release, check to see if incrementing libversion in 
 // configure.ac is necessary.
 #ifndef KVZ_VERSION
-#define KVZ_VERSION 1.1.0
+#define KVZ_VERSION 1.2.0
 #endif
 #define VERSION_STRING QUOTE_EXPAND(KVZ_VERSION)