kc3-lang/md4c

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 902b6ef..e870ea8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,29 @@
 # MD4C Change Log
 
 
+## Next Version (Work in Progress)
+
+Changes:
+
+ * Changes mandated by CommonMark specification 0.30.
+
+   Actually there are only very minor changes to recognition of HTML blocks:
+
+   - The tag `<textarea>` now triggers HTML block (of type 1 as per the
+     specification).
+
+   - HTML declaration (HTML block type 4) is not required to begin with an
+     upper-case ASCII character after the `<!`. Any ASCII character is now
+     allowed.
+
+   Other than that, the newest specification mainly improves test coverage and
+   clarifies its wording in some cases, without affecting the implementation.
+
+   Refer to [CommonMark
+   0.30 notes](https://github.com/commonmark/commonmark-spec/releases/tag/0.30)
+   for more info.
+
+
 ## Version 0.4.8
 
 Fixes:
diff --git a/README.md b/README.md
index 8d36b47..9abe987 100644
--- a/README.md
+++ b/README.md
@@ -28,7 +28,7 @@ MD4C is Markdown parser implementation in C, with the following features:
 
 * **Compliance:** Generally, MD4C aims to be compliant to the latest version of
   [CommonMark specification](http://spec.commonmark.org/). Currently, we are
-  fully compliant to CommonMark 0.29.
+  fully compliant to CommonMark 0.30.
 
 * **Extensions:** MD4C supports some commonly requested and accepted extensions.
   See below.