diff --git a/CHANGELOG.md b/CHANGELOG.md
index 88de83bda4..cd3e2eabef 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,30 @@
+## [1.4.0] - 2016-04-08
+### Added
+- Added support for MacOSX (#65). Thanks to @nevil.
+- Added support for Dolby AC3 and EAC3 Audio in ISO-BMFF (#64).
+- Added support for language code with subtags, e.g. por-BR is now supported.
+- Added a new optional flag (--include_common_pssh) to widevine encryption
+  to include [common system pssh box](https://goo.gl/507mKp) in addition to
+  widevine pssh box.
+- Improved handling of unescaped NAL units in byte stream (#96).
+
+### Changed
+- Changed fixed key encryption to generate
+  [common system pssh box](https://goo.gl/507mKp) by default; overridable by
+  specifying pssh box(es) explicitly with --pssh flag, which is now optional.
+  --pssh should be one or more PSSH boxes instead of just pssh data in hex
+  string format if it is specified.
+- Improved subsample encryption algorithm for H.264 and H.265. Now only video
+  data in slice NALs are encrypted (#40).
+
+### Fixed
+- Split AdaptationSets by container and codec in addition to content_type,
+  language. AVC/MP4 and VP9/WebM are now put in different AdaptationSets if
+  they are packaged together.
+- Fixed index range off-by-1 error in WebM DASH manifest (#99).
+- Fixed WebM SeekHeader bug that the positions should be relative to the
+  Segment payload instead of the start of the file.
+
 ## [1.3.1] - 2016-01-22
 This release fixes and improves WebM parsing and packaging.
 ### Added
@@ -124,6 +151,7 @@ First public release.
 - Added mpd_generator driver program to generate mpd file from packager generated
   intermediate files.
 
+[1.4.0]: https://github.com/google/edash-packager/compare/v1.3.1...v1.4.0
 [1.3.1]: https://github.com/google/edash-packager/compare/v1.3.0...v1.3.1
 [1.3.0]: https://github.com/google/edash-packager/compare/v1.2.0...v1.3.0
 [1.2.1]: https://github.com/google/edash-packager/compare/v1.2.0...v1.2.1
diff --git a/README.md b/README.md
index 88fa028d66..d38edd9a1e 100644
--- a/README.md
+++ b/README.md
@@ -8,11 +8,12 @@ Current supported codecs:
 
 |      Codecs       |   ISO-BMFF   |     WebM     |   MPEG2-TS   |     WVM     |
 |:-----------------:|:------------:|:------------:|:------------:|:-----------:|
-|    H264 (AVC)     |    I / O     |      I       |       -      |      I      |
+|    H264 (AVC)     |    I / O     |      -       |       I      |      I      |
 |    H265 (HEVC)    |    I / O     |      -       |       -      |      -      |
 |       VP8         |    I / O     |    I / O     |       -      |      -      |
 |       VP9         |    I / O     |    I / O     |       -      |      -      |
 |       AAC         |    I / O     |      -       |       I      |      I      |
+|  Dolby AC3/EAC3   |    I / O     |      -       |       -      |      -      |
 |       DTS         |    I / O     |      -       |       -      |      -      |
 |       Opus        |      -       |    I / O     |       -      |      -      |
 |      Vorbis       |      -       |    I / O     |       -      |      -      |
@@ -89,16 +90,24 @@ We have a [public mailing list](https://groups.google.com/forum/#!forum/edash-us
 
 1. Install [Docker](https://docs.docker.com/installation/).
 
-2. Build the image
+2. Pull prebuilt image from Dockerhub or build an image locally
 
-  ```Shell
-  docker build -t edash github.com/google/edash-packager.git
-  ```
+  2.a. Pull prebuilt image from Dockerhub
+
+    ```Shell
+    docker pull google/edash-packager
+    ```
+
+  2.b. Build an image locally
+
+    ```Shell
+    docker build -t google/edash-packager github.com/google/edash-packager.git
+    ```
 
 3. Run the container (`your_media_path` should be your media folder)
 
   ```Shell
-  docker run -v /your_media_path/:/media -it --rm edash
+  docker run -v /your_media_path/:/media -it --rm google/edash-packager
   ```
 
 4. Testing
diff --git a/packager/app/widevine_encryption_flags.cc b/packager/app/widevine_encryption_flags.cc
index b83d94d15f..1517a8d4bd 100644
--- a/packager/app/widevine_encryption_flags.cc
+++ b/packager/app/widevine_encryption_flags.cc
@@ -27,7 +27,7 @@ DEFINE_bool(include_common_pssh,
             false,
             "When using Widevine encryption, include an additional v1 PSSH box "
             "for the common system ID that includes the key IDs. See: "
-            "http://goo.gl/PHZDAF");
+            "https://goo.gl/507mKp");
 DEFINE_string(key_server_url, "", "Key server url. Required for encryption and "
               "decryption");
 DEFINE_string(content_id, "", "Content Id (hex).");