diff --git a/CHANGELOG.md b/CHANGELOG.md
index 84ff4741..12ff4a11 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,7 +1,8 @@
 # Changelog
 All notable changes to this project will be documented in this file.
 
-## Unreleased - ???
+## 1.12.0 - 2020-09-07
+- Make `zero?`, `one?`, `pos?`, and `neg?` polymorphic.
 - Add C++ support to jpm and improve C++ interop in janet.h.
 - Add `%t` formatter to `printf`, `string/format`, and other formatter functions.
 - Expose `janet_cfuns_prefix` in C API.
diff --git a/Makefile b/Makefile
index 8551d2b3..7a6968e3 100644
--- a/Makefile
+++ b/Makefile
@@ -156,7 +156,7 @@ build/janet.c: build/janet_boot src/boot/boot.janet
 ##### Amalgamation #####
 ########################
 
-SONAME=libjanet.so.1.11
+SONAME=libjanet.so.1.12
 
 build/shell.c: src/mainclient/shell.c
 	cp $< $@
diff --git a/meson.build b/meson.build
index ec8efbce..8db66938 100644
--- a/meson.build
+++ b/meson.build
@@ -20,7 +20,7 @@
 
 project('janet', 'c',
   default_options : ['c_std=c99', 'b_lundef=false', 'default_library=both'],
-  version : '1.11.4')
+  version : '1.12.0')
 
 # Global settings
 janet_path = join_paths(get_option('prefix'), get_option('libdir'), 'janet')
@@ -71,6 +71,7 @@ conf.set('JANET_STACK_MAX', get_option('stack_max'))
 conf.set('JANET_NO_UMASK', not get_option('umask'))
 conf.set('JANET_NO_REALPATH', not get_option('realpath'))
 conf.set('JANET_NO_PROCESSES', not get_option('processes'))
+conf.set('JANET_SIMPLE_GETLINE', get_option('simple_getline'))
 if get_option('os_name') != ''
   conf.set('JANET_OS_NAME', get_option('os_name'))
 endif
diff --git a/meson_options.txt b/meson_options.txt
index eb068126..7dc1174e 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -15,6 +15,7 @@ option('net', type : 'boolean', value : true)
 option('processes', type : 'boolean', value : true)
 option('umask', type : 'boolean', value : true)
 option('realpath', type : 'boolean', value : true)
+option('simple_getline', type : 'boolean', value : false)
 
 option('recursion_guard', type : 'integer', min : 10, max : 8000, value : 1024)
 option('max_proto_depth', type : 'integer', min : 10, max : 8000, value : 200)
diff --git a/src/conf/janetconf.h b/src/conf/janetconf.h
index 33ae4ab4..e58b399e 100644
--- a/src/conf/janetconf.h
+++ b/src/conf/janetconf.h
@@ -27,10 +27,10 @@
 #define JANETCONF_H
 
 #define JANET_VERSION_MAJOR 1
-#define JANET_VERSION_MINOR 11
-#define JANET_VERSION_PATCH 4
-#define JANET_VERSION_EXTRA "-dev"
-#define JANET_VERSION "1.11.4-dev"
+#define JANET_VERSION_MINOR 12
+#define JANET_VERSION_PATCH 0
+#define JANET_VERSION_EXTRA ""
+#define JANET_VERSION "1.12.0"
 
 /* #define JANET_BUILD "local" */