diff --git a/CHANGELOG.md b/CHANGELOG.md
index 98abde4..6d63f14 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,7 @@
 # Changelog
 
 - [Changelog](#changelog)
+- [v0.4.0](#v040)
 - [v0.3.1](#v031)
 - [v0.3.0](#v030)
 - [v0.2.1](#v021)
@@ -8,6 +9,35 @@
 - [v0.1.1](#v011)
 - [v0.1](#v01)
 
+# v0.4.0
+
+What's new:
+- Cpptrace now has a C API! 🎉
+- Cpptrace is now able to parse macOS debug maps and resolve stack traces without dSYM files
+
+Most notable improvements:
+- Updated cpptrace exception objects to generate traces at the callsite for improved consistency with trace output. As
+  part fo this cpptrace exception objects have had their constructors updated.
+- Improved dwarf back-end robustness
+  - Fallback to the compilation-unit cache or walking compilation-units if aranges lookup fails
+- Eliminated reliance on a CMake-generated export header
+- Added a configuration to control resolution of inlined function calls
+- Made architecture selection in Mach-O universal binaries
+
+Other improvements:
+- Improved documentation for installation and usage
+- Generally improved README content and organization
+- Fixed an MSVC workaround producing dozens of warnings
+- Better handle compiler color diagnostic arguments if compiler families differ
+- Improvements for handling libdwarf's header placement
+- Fixed issue with libunwind resolution
+- `-Werror` is now used in CI
+- More library configurations are now tested in CI
+- Updated to libdwarf 9
+- Updated the library's CMake to acquire zstd through FetchContent
+- Fixed minor issue with stacktrace printing always trying to enable virtual terminal processing, even when not actually
+  printing to the terminal.
+
 # v0.3.1
 
 Tiny patch:
diff --git a/CMakeLists.txt b/CMakeLists.txt
index aa4a1e9..e077cf8 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -9,7 +9,7 @@ set(package_name "cpptrace")
 
 project(
   cpptrace
-  VERSION 0.3.1
+  VERSION 0.4.0
   DESCRIPTION "Simple, portable, and self-contained stacktrace library for C++11 and newer "
   HOMEPAGE_URL "https://github.com/jeremy-rifkin/cpptrace"
   LANGUAGES C CXX
diff --git a/README.md b/README.md
index cb0b884..892480a 100644
--- a/README.md
+++ b/README.md
@@ -99,7 +99,7 @@ include(FetchContent)
 FetchContent_Declare(
   cpptrace
   GIT_REPOSITORY https://github.com/jeremy-rifkin/cpptrace.git
-  GIT_TAG        v0.3.1 # <HASH or TAG>
+  GIT_TAG        v0.4.0 # <HASH or TAG>
 )
 FetchContent_MakeAvailable(cpptrace)
 target_link_libraries(your_target cpptrace::cpptrace)
@@ -537,7 +537,7 @@ include(FetchContent)
 FetchContent_Declare(
   cpptrace
   GIT_REPOSITORY https://github.com/jeremy-rifkin/cpptrace.git
-  GIT_TAG        v0.3.1 # <HASH or TAG>
+  GIT_TAG        v0.4.0 # <HASH or TAG>
 )
 FetchContent_MakeAvailable(cpptrace)
 target_link_libraries(your_target cpptrace::cpptrace)
@@ -553,7 +553,7 @@ information.
 
 ```sh
 git clone https://github.com/jeremy-rifkin/cpptrace.git
-git checkout v0.3.1
+git checkout v0.4.0
 mkdir cpptrace/build
 cd cpptrace/build
 cmake .. -DCMAKE_BUILD_TYPE=Release
@@ -589,7 +589,7 @@ you when installing new libraries.
 
 ```ps1
 git clone https://github.com/jeremy-rifkin/cpptrace.git
-git checkout v0.3.1
+git checkout v0.4.0
 mkdir cpptrace/build
 cd cpptrace/build
 cmake .. -DCMAKE_BUILD_TYPE=Release
@@ -607,7 +607,7 @@ To install just for the local user (or any custom prefix):
 
 ```sh
 git clone https://github.com/jeremy-rifkin/cpptrace.git
-git checkout v0.3.1
+git checkout v0.4.0
 mkdir cpptrace/build
 cd cpptrace/build
 cmake .. -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=$HOME/wherever
@@ -682,7 +682,7 @@ make install
 cd ~/scratch/cpptrace-test
 git clone https://github.com/jeremy-rifkin/cpptrace.git
 cd cpptrace
-git checkout v0.3.1
+git checkout v0.4.0
 mkdir build
 cd build
 cmake .. -DCMAKE_BUILD_TYPE=Release -DBUILD_SHARED_LIBS=On -DCPPTRACE_USE_EXTERNAL_LIBDWARF=On -DCMAKE_PREFIX_PATH=~/scratch/cpptrace-test/resources -DCMAKE_INSTALL_PREFIX=~/scratch/cpptrace-test/resources
@@ -702,7 +702,7 @@ cpptrace and its dependencies.
 Cpptrace is available through conan at https://conan.io/center/recipes/cpptrace.
 ```
 [requires]
-cpptrace/0.3.1
+cpptrace/0.4.0
 [generators]
 CMakeDeps
 CMakeToolchain