diff --git a/.github/workflows/macos.yml b/.github/workflows/macos.yml
index 77e6c2066..af3f163a9 100644
--- a/.github/workflows/macos.yml
+++ b/.github/workflows/macos.yml
@@ -6,7 +6,7 @@ jobs:
   build:
 
     env:
-      PACKAGE: sdformat11
+      PACKAGE: sdformat12
     runs-on: macos-latest
     steps:
     - uses: actions/checkout@v2
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 31e41b188..d5cbae109 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -20,18 +20,18 @@ if(UNIX AND NOT WIN32)
  endif(CMAKE_UNAME)
 endif()
 
-project (sdformat11)
+project (sdformat12)
 
 # The protocol version has nothing to do with the package version set below.
 # It represents the current version of sdformat implement by the software
 set (SDF_PROTOCOL_VERSION 1.8)
 
-set (SDF_MAJOR_VERSION 11)
+set (SDF_MAJOR_VERSION 12)
 set (SDF_MINOR_VERSION 0)
 set (SDF_PATCH_VERSION 0)
 
 set (SDF_VERSION ${SDF_MAJOR_VERSION}.${SDF_MINOR_VERSION})
-set (SDF_VERSION_FULL ${SDF_MAJOR_VERSION}.${SDF_MINOR_VERSION}.${SDF_PATCH_VERSION}~pre3)
+set (SDF_VERSION_FULL ${SDF_MAJOR_VERSION}.${SDF_MINOR_VERSION}.${SDF_PATCH_VERSION}~pre1)
 
 string (TOLOWER ${PROJECT_NAME} PROJECT_NAME_LOWER)
 string(REGEX REPLACE "[0-9]+" "" PROJECT_NAME_NO_VERSION ${PROJECT_NAME})
diff --git a/Changelog.md b/Changelog.md
index 044d93c16..9415e7d2b 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -1,8 +1,12 @@
+## libsdformat 12.X
+
+### libsdformat 12.0.0 (202X-XX-XX)
+
 ## libsdformat 11.X
 
 ### libsdformat 11.X.X (202X-XX-XX)
 
-### libsdformat 11.0.0 (202X-XX-XX)
+### libsdformat 11.0.0 (2021-03-30)
 
 1. Add ParserConfig class to encapsulate file path settings.
     * [Pull request 439](https://github.com/osrf/sdformat/pull/439)
@@ -69,6 +73,7 @@
     * [Pull request 275](https://github.com/osrf/sdformat/pull/275)
     * [Pull request 250](https://github.com/osrf/sdformat/pull/250)
     * [Pull request 243](https://github.com/osrf/sdformat/pull/243)
+    * [Pull request 524](https://github.com/osrf/sdformat/pull/524)
 
 1. Implement SDFormat 1.8 Model Composition.
     * [Pull request 426](https://github.com/osrf/sdformat/pull/426)
diff --git a/README.md b/README.md
index 60c03f28b..19614df8e 100644
--- a/README.md
+++ b/README.md
@@ -80,9 +80,9 @@ conda install libsdformat=9.3.0 --channel conda-forge
 ## Source Installation
 
 
-**Note:** the `master` branch is under development for `libsdformat11` and is
-currently unstable. A release branch (`sdf10`, `sdf9`, etc.) is recommended
-for most users.
+**Note:** the `main` branch is under development for `libsdformat12` and is
+currently unstable. A release branch (`sdf11`, `sdf10`, `sdf9`, etc.) is
+recommended for most users.
 
 ## UNIX
 
diff --git a/examples/CMakeLists.txt b/examples/CMakeLists.txt
index 07d02a830..41d58c80f 100644
--- a/examples/CMakeLists.txt
+++ b/examples/CMakeLists.txt
@@ -1,6 +1,6 @@
 cmake_minimum_required(VERSION 3.10.2 FATAL_ERROR)
 
-find_package(sdformat11 REQUIRED)
+find_package(sdformat12 REQUIRED)
 
 set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++17")