diff --git a/configure.ac b/configure.ac
index 72ce2f25..49502673 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2,7 +2,7 @@
 # Process this file with autoconf to produce a configure script.
 
 AC_PREREQ([2.63])
-AC_INIT([libmaxminddb], [1.1.5], [support@maxmind.com])
+AC_INIT([libmaxminddb], [1.2.0], [support@maxmind.com])
 AC_CONFIG_SRCDIR([include/maxminddb.h])
 AC_CONFIG_HEADERS([config.h include/maxminddb_config.h])
 
diff --git a/include/maxminddb.h b/include/maxminddb.h
index c5dbcb9a..f9d238a5 100644
--- a/include/maxminddb.h
+++ b/include/maxminddb.h
@@ -20,7 +20,7 @@ extern "C" {
 #include <winsock2.h>
 #include <ws2tcpip.h>
 /* libmaxminddb package version from configure */
-#define PACKAGE_VERSION "1.1.5"
+#define PACKAGE_VERSION "1.2.0"
 
 typedef ADDRESS_FAMILY sa_family_t;