diff --git a/CHANGELOG.md b/CHANGELOG.md
index 12960efe6..d2eef15a8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,17 @@
+### [1.6.4] 2018-04-13
+
+  * Security fixes in some edge case scenarios, recommended update for all users
+  * Fixed regression in version guessing of path repositories
+  * Fixed removing aliased packages from the repository, which might resolve some odd update bugs
+  * Fixed updating of package URLs for GitLab
+  * Fixed run-script --list failing when script handlers were defined
+  * Fixed init command not respecting the current php version when selecting package versions
+  * Fixed handling of uppercase package names in why/why-not commands
+  * Fixed exclude-from-classmap symlink handling
+  * Fixed filesystem permissions of PEAR binaries
+  * Improved performance of subversion repos
+  * Other minor fixes
+
 ### [1.6.3] 2018-01-31
 
   * Fixed GitLab downloads failing in some edge cases
@@ -628,6 +642,7 @@
 
   * Initial release
 
+[1.6.4]: https://github.com/composer/composer/compare/1.6.3...1.6.4
 [1.6.3]: https://github.com/composer/composer/compare/1.6.2...1.6.3
 [1.6.2]: https://github.com/composer/composer/compare/1.6.1...1.6.2
 [1.6.1]: https://github.com/composer/composer/compare/1.6.0...1.6.1
diff --git a/res/composer-schema.json b/res/composer-schema.json
index cdc34ca2f..bfd9b830f 100644
--- a/res/composer-schema.json
+++ b/res/composer-schema.json
@@ -33,6 +33,10 @@
             "description": "Homepage URL for the project.",
             "format": "uri"
         },
+        "readme": {
+            "type": "string",
+            "description": "Relative path to the readme document."
+        },
         "version": {
             "type": "string",
             "description": "Package version, see https://getcomposer.org/doc/04-schema.md#version for more info on valid schemes."