diff --git a/CMakeLists.txt b/CMakeLists.txt
index dca6850..808330e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -8,7 +8,7 @@ if (POLICY CMP0063)
   cmake_policy (SET CMP0063 NEW)
 endif (POLICY CMP0063)
 
-project(glog VERSION 0.3.5 LANGUAGES C CXX)
+project(glog VERSION 0.4.0 LANGUAGES C CXX)
 
 set (CPACK_PACKAGE_NAME glog)
 set (CPACK_PACKAGE_DESCRIPTION_SUMMARY "")
diff --git a/cmake/INSTALL.md b/cmake/INSTALL.md
index a73f05e..1377d65 100644
--- a/cmake/INSTALL.md
+++ b/cmake/INSTALL.md
@@ -53,7 +53,7 @@ If you have Glog installed in your system, you can use the CMake command
 cmake_minimum_required(VERSION 3.0.2)
 project(myproj VERSION 1.0)
 
-find_package(glog 0.3.5 REQUIRED)
+find_package(glog 0.4.0 REQUIRED)
 
 add_executable(myapp main.cpp)
 target_link_libraries(myapp glog::glog)
diff --git a/configure.ac b/configure.ac
index 02a767f..02c118c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -5,7 +5,7 @@
 # make sure we're interpreted by some minimal autoconf
 AC_PREREQ(2.57)
 
-AC_INIT(glog, 0.3.5, opensource@google.com)
+AC_INIT(glog, 0.4.0, opensource@google.com)
 # The argument here is just something that should be in the current directory
 # (for sanity checking)
 AC_CONFIG_SRCDIR(README.md)
diff --git a/packages/deb/changelog b/packages/deb/changelog
index 261cfd5..4cbed1b 100644
--- a/packages/deb/changelog
+++ b/packages/deb/changelog
@@ -1,3 +1,9 @@
+google-glog (0.4.0-1) unstable; urgency=low
+
+  * New upstream release.
+
+ -- Google Inc. <opensource@google.com>  Tue, 22 Jan 2019 21:00:26 +0900
+
 google-glog (0.3.5-1) unstable; urgency=low
 
   * New upstream release.