diff --git a/gstreamer-app-sys/CHANGELOG.md b/gstreamer-app-sys/CHANGELOG.md
index a0b7e3b33..0b8ae721c 100644
--- a/gstreamer-app-sys/CHANGELOG.md
+++ b/gstreamer-app-sys/CHANGELOG.md
@@ -5,6 +5,19 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html),
 specifically the [variant used by Rust](http://doc.crates.io/manifest.html#the-version-field).
 
+## [0.4.0] - 2017-12-23
+### Added
+- GstNet bindings
+- Debug impls for basically every type
+- Script to automatically regenerate everything
+
+### Changed
+- gst_player_[sg]et_multiview_mode() argument types were changed from
+  GstMultiviewMode to GstMultiviewFramePacking, which is the correct subset
+  of the former that is allowed here
+- gst_plugin_add_dependency() takes *mut *mut c_char as argument type instead
+  of *mut *const c_char
+
 ## [0.3.0] - 2017-11-26
 ### Added
 - GstMpegTs bindings
@@ -57,7 +70,9 @@ specifically the [variant used by Rust](http://doc.crates.io/manifest.html#the-v
 
 - Initial release of the autogenerated GStreamer FFI bindings.
 
-[Unreleased]: https://github.com/sdroege/gstreamer-sys/compare/0.2.1...HEAD
+[Unreleased]: https://github.com/sdroege/gstreamer-sys/compare/0.4.0...HEAD
+[0.4.0]: https://github.com/sdroege/gstreamer-sys/compare/0.3.0...0.4.0
+[0.3.0]: https://github.com/sdroege/gstreamer-sys/compare/0.2.1...0.3.0
 [0.2.1]: https://github.com/sdroege/gstreamer-sys/compare/0.2.0...0.2.1
 [0.2.0]: https://github.com/sdroege/gstreamer-sys/compare/0.1.1...0.2.0
 [0.1.1]: https://github.com/sdroege/gstreamer-sys/compare/0.1.0...0.1.1
diff --git a/gstreamer-audio-sys/CHANGELOG.md b/gstreamer-audio-sys/CHANGELOG.md
index a0b7e3b33..0b8ae721c 100644
--- a/gstreamer-audio-sys/CHANGELOG.md
+++ b/gstreamer-audio-sys/CHANGELOG.md
@@ -5,6 +5,19 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html),
 specifically the [variant used by Rust](http://doc.crates.io/manifest.html#the-version-field).
 
+## [0.4.0] - 2017-12-23
+### Added
+- GstNet bindings
+- Debug impls for basically every type
+- Script to automatically regenerate everything
+
+### Changed
+- gst_player_[sg]et_multiview_mode() argument types were changed from
+  GstMultiviewMode to GstMultiviewFramePacking, which is the correct subset
+  of the former that is allowed here
+- gst_plugin_add_dependency() takes *mut *mut c_char as argument type instead
+  of *mut *const c_char
+
 ## [0.3.0] - 2017-11-26
 ### Added
 - GstMpegTs bindings
@@ -57,7 +70,9 @@ specifically the [variant used by Rust](http://doc.crates.io/manifest.html#the-v
 
 - Initial release of the autogenerated GStreamer FFI bindings.
 
-[Unreleased]: https://github.com/sdroege/gstreamer-sys/compare/0.2.1...HEAD
+[Unreleased]: https://github.com/sdroege/gstreamer-sys/compare/0.4.0...HEAD
+[0.4.0]: https://github.com/sdroege/gstreamer-sys/compare/0.3.0...0.4.0
+[0.3.0]: https://github.com/sdroege/gstreamer-sys/compare/0.2.1...0.3.0
 [0.2.1]: https://github.com/sdroege/gstreamer-sys/compare/0.2.0...0.2.1
 [0.2.0]: https://github.com/sdroege/gstreamer-sys/compare/0.1.1...0.2.0
 [0.1.1]: https://github.com/sdroege/gstreamer-sys/compare/0.1.0...0.1.1
diff --git a/gstreamer-base-sys/CHANGELOG.md b/gstreamer-base-sys/CHANGELOG.md
index a0b7e3b33..0b8ae721c 100644
--- a/gstreamer-base-sys/CHANGELOG.md
+++ b/gstreamer-base-sys/CHANGELOG.md
@@ -5,6 +5,19 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html),
 specifically the [variant used by Rust](http://doc.crates.io/manifest.html#the-version-field).
 
+## [0.4.0] - 2017-12-23
+### Added
+- GstNet bindings
+- Debug impls for basically every type
+- Script to automatically regenerate everything
+
+### Changed
+- gst_player_[sg]et_multiview_mode() argument types were changed from
+  GstMultiviewMode to GstMultiviewFramePacking, which is the correct subset
+  of the former that is allowed here
+- gst_plugin_add_dependency() takes *mut *mut c_char as argument type instead
+  of *mut *const c_char
+
 ## [0.3.0] - 2017-11-26
 ### Added
 - GstMpegTs bindings
@@ -57,7 +70,9 @@ specifically the [variant used by Rust](http://doc.crates.io/manifest.html#the-v
 
 - Initial release of the autogenerated GStreamer FFI bindings.
 
-[Unreleased]: https://github.com/sdroege/gstreamer-sys/compare/0.2.1...HEAD
+[Unreleased]: https://github.com/sdroege/gstreamer-sys/compare/0.4.0...HEAD
+[0.4.0]: https://github.com/sdroege/gstreamer-sys/compare/0.3.0...0.4.0
+[0.3.0]: https://github.com/sdroege/gstreamer-sys/compare/0.2.1...0.3.0
 [0.2.1]: https://github.com/sdroege/gstreamer-sys/compare/0.2.0...0.2.1
 [0.2.0]: https://github.com/sdroege/gstreamer-sys/compare/0.1.1...0.2.0
 [0.1.1]: https://github.com/sdroege/gstreamer-sys/compare/0.1.0...0.1.1
diff --git a/gstreamer-mpegts-sys/CHANGELOG.md b/gstreamer-mpegts-sys/CHANGELOG.md
index a0b7e3b33..0b8ae721c 100644
--- a/gstreamer-mpegts-sys/CHANGELOG.md
+++ b/gstreamer-mpegts-sys/CHANGELOG.md
@@ -5,6 +5,19 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html),
 specifically the [variant used by Rust](http://doc.crates.io/manifest.html#the-version-field).
 
+## [0.4.0] - 2017-12-23
+### Added
+- GstNet bindings
+- Debug impls for basically every type
+- Script to automatically regenerate everything
+
+### Changed
+- gst_player_[sg]et_multiview_mode() argument types were changed from
+  GstMultiviewMode to GstMultiviewFramePacking, which is the correct subset
+  of the former that is allowed here
+- gst_plugin_add_dependency() takes *mut *mut c_char as argument type instead
+  of *mut *const c_char
+
 ## [0.3.0] - 2017-11-26
 ### Added
 - GstMpegTs bindings
@@ -57,7 +70,9 @@ specifically the [variant used by Rust](http://doc.crates.io/manifest.html#the-v
 
 - Initial release of the autogenerated GStreamer FFI bindings.
 
-[Unreleased]: https://github.com/sdroege/gstreamer-sys/compare/0.2.1...HEAD
+[Unreleased]: https://github.com/sdroege/gstreamer-sys/compare/0.4.0...HEAD
+[0.4.0]: https://github.com/sdroege/gstreamer-sys/compare/0.3.0...0.4.0
+[0.3.0]: https://github.com/sdroege/gstreamer-sys/compare/0.2.1...0.3.0
 [0.2.1]: https://github.com/sdroege/gstreamer-sys/compare/0.2.0...0.2.1
 [0.2.0]: https://github.com/sdroege/gstreamer-sys/compare/0.1.1...0.2.0
 [0.1.1]: https://github.com/sdroege/gstreamer-sys/compare/0.1.0...0.1.1
diff --git a/gstreamer-net-sys/CHANGELOG.md b/gstreamer-net-sys/CHANGELOG.md
index 4ab09c5db..0b8ae721c 100644
--- a/gstreamer-net-sys/CHANGELOG.md
+++ b/gstreamer-net-sys/CHANGELOG.md
@@ -5,6 +5,36 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html),
 specifically the [variant used by Rust](http://doc.crates.io/manifest.html#the-version-field).
 
+## [0.4.0] - 2017-12-23
+### Added
+- GstNet bindings
+- Debug impls for basically every type
+- Script to automatically regenerate everything
+
+### Changed
+- gst_player_[sg]et_multiview_mode() argument types were changed from
+  GstMultiviewMode to GstMultiviewFramePacking, which is the correct subset
+  of the former that is allowed here
+- gst_plugin_add_dependency() takes *mut *mut c_char as argument type instead
+  of *mut *const c_char
+
+## [0.3.0] - 2017-11-26
+### Added
+- GstMpegTs bindings
+
+### Changed
+- GstDebugColorFlags from an enum to a bitfield
+- Updated to bitflags 1.0
+- Added support for the "dox" feature to generate documentation for all
+  possible versions
+- Depend on glib-sys/gobject-sys 0.5
+
+### Fixes
+- GstStackTraceFlags, gst_flow_combiner_ref/unref are only available since
+  1.12 and 1.12.1 respectively
+- All C enums are represented as integers + constants now to prevent undefined
+  behaviour when out-of-range values are received
+
 ## [0.2.1] - 2017-09-10
 ### Changed
 - Add README.md to all crates directly
@@ -40,7 +70,9 @@ specifically the [variant used by Rust](http://doc.crates.io/manifest.html#the-v
 
 - Initial release of the autogenerated GStreamer FFI bindings.
 
-[Unreleased]: https://github.com/sdroege/gstreamer-sys/compare/0.2.1...HEAD
+[Unreleased]: https://github.com/sdroege/gstreamer-sys/compare/0.4.0...HEAD
+[0.4.0]: https://github.com/sdroege/gstreamer-sys/compare/0.3.0...0.4.0
+[0.3.0]: https://github.com/sdroege/gstreamer-sys/compare/0.2.1...0.3.0
 [0.2.1]: https://github.com/sdroege/gstreamer-sys/compare/0.2.0...0.2.1
 [0.2.0]: https://github.com/sdroege/gstreamer-sys/compare/0.1.1...0.2.0
 [0.1.1]: https://github.com/sdroege/gstreamer-sys/compare/0.1.0...0.1.1
diff --git a/gstreamer-pbutils-sys/CHANGELOG.md b/gstreamer-pbutils-sys/CHANGELOG.md
index a0b7e3b33..0b8ae721c 100644
--- a/gstreamer-pbutils-sys/CHANGELOG.md
+++ b/gstreamer-pbutils-sys/CHANGELOG.md
@@ -5,6 +5,19 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html),
 specifically the [variant used by Rust](http://doc.crates.io/manifest.html#the-version-field).
 
+## [0.4.0] - 2017-12-23
+### Added
+- GstNet bindings
+- Debug impls for basically every type
+- Script to automatically regenerate everything
+
+### Changed
+- gst_player_[sg]et_multiview_mode() argument types were changed from
+  GstMultiviewMode to GstMultiviewFramePacking, which is the correct subset
+  of the former that is allowed here
+- gst_plugin_add_dependency() takes *mut *mut c_char as argument type instead
+  of *mut *const c_char
+
 ## [0.3.0] - 2017-11-26
 ### Added
 - GstMpegTs bindings
@@ -57,7 +70,9 @@ specifically the [variant used by Rust](http://doc.crates.io/manifest.html#the-v
 
 - Initial release of the autogenerated GStreamer FFI bindings.
 
-[Unreleased]: https://github.com/sdroege/gstreamer-sys/compare/0.2.1...HEAD
+[Unreleased]: https://github.com/sdroege/gstreamer-sys/compare/0.4.0...HEAD
+[0.4.0]: https://github.com/sdroege/gstreamer-sys/compare/0.3.0...0.4.0
+[0.3.0]: https://github.com/sdroege/gstreamer-sys/compare/0.2.1...0.3.0
 [0.2.1]: https://github.com/sdroege/gstreamer-sys/compare/0.2.0...0.2.1
 [0.2.0]: https://github.com/sdroege/gstreamer-sys/compare/0.1.1...0.2.0
 [0.1.1]: https://github.com/sdroege/gstreamer-sys/compare/0.1.0...0.1.1
diff --git a/gstreamer-player-sys/CHANGELOG.md b/gstreamer-player-sys/CHANGELOG.md
index a0b7e3b33..0b8ae721c 100644
--- a/gstreamer-player-sys/CHANGELOG.md
+++ b/gstreamer-player-sys/CHANGELOG.md
@@ -5,6 +5,19 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html),
 specifically the [variant used by Rust](http://doc.crates.io/manifest.html#the-version-field).
 
+## [0.4.0] - 2017-12-23
+### Added
+- GstNet bindings
+- Debug impls for basically every type
+- Script to automatically regenerate everything
+
+### Changed
+- gst_player_[sg]et_multiview_mode() argument types were changed from
+  GstMultiviewMode to GstMultiviewFramePacking, which is the correct subset
+  of the former that is allowed here
+- gst_plugin_add_dependency() takes *mut *mut c_char as argument type instead
+  of *mut *const c_char
+
 ## [0.3.0] - 2017-11-26
 ### Added
 - GstMpegTs bindings
@@ -57,7 +70,9 @@ specifically the [variant used by Rust](http://doc.crates.io/manifest.html#the-v
 
 - Initial release of the autogenerated GStreamer FFI bindings.
 
-[Unreleased]: https://github.com/sdroege/gstreamer-sys/compare/0.2.1...HEAD
+[Unreleased]: https://github.com/sdroege/gstreamer-sys/compare/0.4.0...HEAD
+[0.4.0]: https://github.com/sdroege/gstreamer-sys/compare/0.3.0...0.4.0
+[0.3.0]: https://github.com/sdroege/gstreamer-sys/compare/0.2.1...0.3.0
 [0.2.1]: https://github.com/sdroege/gstreamer-sys/compare/0.2.0...0.2.1
 [0.2.0]: https://github.com/sdroege/gstreamer-sys/compare/0.1.1...0.2.0
 [0.1.1]: https://github.com/sdroege/gstreamer-sys/compare/0.1.0...0.1.1
diff --git a/gstreamer-sys/CHANGELOG.md b/gstreamer-sys/CHANGELOG.md
index a0b7e3b33..0b8ae721c 100644
--- a/gstreamer-sys/CHANGELOG.md
+++ b/gstreamer-sys/CHANGELOG.md
@@ -5,6 +5,19 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html),
 specifically the [variant used by Rust](http://doc.crates.io/manifest.html#the-version-field).
 
+## [0.4.0] - 2017-12-23
+### Added
+- GstNet bindings
+- Debug impls for basically every type
+- Script to automatically regenerate everything
+
+### Changed
+- gst_player_[sg]et_multiview_mode() argument types were changed from
+  GstMultiviewMode to GstMultiviewFramePacking, which is the correct subset
+  of the former that is allowed here
+- gst_plugin_add_dependency() takes *mut *mut c_char as argument type instead
+  of *mut *const c_char
+
 ## [0.3.0] - 2017-11-26
 ### Added
 - GstMpegTs bindings
@@ -57,7 +70,9 @@ specifically the [variant used by Rust](http://doc.crates.io/manifest.html#the-v
 
 - Initial release of the autogenerated GStreamer FFI bindings.
 
-[Unreleased]: https://github.com/sdroege/gstreamer-sys/compare/0.2.1...HEAD
+[Unreleased]: https://github.com/sdroege/gstreamer-sys/compare/0.4.0...HEAD
+[0.4.0]: https://github.com/sdroege/gstreamer-sys/compare/0.3.0...0.4.0
+[0.3.0]: https://github.com/sdroege/gstreamer-sys/compare/0.2.1...0.3.0
 [0.2.1]: https://github.com/sdroege/gstreamer-sys/compare/0.2.0...0.2.1
 [0.2.0]: https://github.com/sdroege/gstreamer-sys/compare/0.1.1...0.2.0
 [0.1.1]: https://github.com/sdroege/gstreamer-sys/compare/0.1.0...0.1.1
diff --git a/gstreamer-tag-sys/CHANGELOG.md b/gstreamer-tag-sys/CHANGELOG.md
index a0b7e3b33..0b8ae721c 100644
--- a/gstreamer-tag-sys/CHANGELOG.md
+++ b/gstreamer-tag-sys/CHANGELOG.md
@@ -5,6 +5,19 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html),
 specifically the [variant used by Rust](http://doc.crates.io/manifest.html#the-version-field).
 
+## [0.4.0] - 2017-12-23
+### Added
+- GstNet bindings
+- Debug impls for basically every type
+- Script to automatically regenerate everything
+
+### Changed
+- gst_player_[sg]et_multiview_mode() argument types were changed from
+  GstMultiviewMode to GstMultiviewFramePacking, which is the correct subset
+  of the former that is allowed here
+- gst_plugin_add_dependency() takes *mut *mut c_char as argument type instead
+  of *mut *const c_char
+
 ## [0.3.0] - 2017-11-26
 ### Added
 - GstMpegTs bindings
@@ -57,7 +70,9 @@ specifically the [variant used by Rust](http://doc.crates.io/manifest.html#the-v
 
 - Initial release of the autogenerated GStreamer FFI bindings.
 
-[Unreleased]: https://github.com/sdroege/gstreamer-sys/compare/0.2.1...HEAD
+[Unreleased]: https://github.com/sdroege/gstreamer-sys/compare/0.4.0...HEAD
+[0.4.0]: https://github.com/sdroege/gstreamer-sys/compare/0.3.0...0.4.0
+[0.3.0]: https://github.com/sdroege/gstreamer-sys/compare/0.2.1...0.3.0
 [0.2.1]: https://github.com/sdroege/gstreamer-sys/compare/0.2.0...0.2.1
 [0.2.0]: https://github.com/sdroege/gstreamer-sys/compare/0.1.1...0.2.0
 [0.1.1]: https://github.com/sdroege/gstreamer-sys/compare/0.1.0...0.1.1
diff --git a/gstreamer-video-sys/CHANGELOG.md b/gstreamer-video-sys/CHANGELOG.md
index a0b7e3b33..0b8ae721c 100644
--- a/gstreamer-video-sys/CHANGELOG.md
+++ b/gstreamer-video-sys/CHANGELOG.md
@@ -5,6 +5,19 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html),
 specifically the [variant used by Rust](http://doc.crates.io/manifest.html#the-version-field).
 
+## [0.4.0] - 2017-12-23
+### Added
+- GstNet bindings
+- Debug impls for basically every type
+- Script to automatically regenerate everything
+
+### Changed
+- gst_player_[sg]et_multiview_mode() argument types were changed from
+  GstMultiviewMode to GstMultiviewFramePacking, which is the correct subset
+  of the former that is allowed here
+- gst_plugin_add_dependency() takes *mut *mut c_char as argument type instead
+  of *mut *const c_char
+
 ## [0.3.0] - 2017-11-26
 ### Added
 - GstMpegTs bindings
@@ -57,7 +70,9 @@ specifically the [variant used by Rust](http://doc.crates.io/manifest.html#the-v
 
 - Initial release of the autogenerated GStreamer FFI bindings.
 
-[Unreleased]: https://github.com/sdroege/gstreamer-sys/compare/0.2.1...HEAD
+[Unreleased]: https://github.com/sdroege/gstreamer-sys/compare/0.4.0...HEAD
+[0.4.0]: https://github.com/sdroege/gstreamer-sys/compare/0.3.0...0.4.0
+[0.3.0]: https://github.com/sdroege/gstreamer-sys/compare/0.2.1...0.3.0
 [0.2.1]: https://github.com/sdroege/gstreamer-sys/compare/0.2.0...0.2.1
 [0.2.0]: https://github.com/sdroege/gstreamer-sys/compare/0.1.1...0.2.0
 [0.1.1]: https://github.com/sdroege/gstreamer-sys/compare/0.1.0...0.1.1