diff --git a/changelog.txt b/changelog.txt
@@ -1,3 +1,37 @@
+[0.18.2]
+
+ * Added commonmark renderer: `cmark_render_commonmark`. In addition
+ to options, this takes a `width` parameter. A value of 0 disables
+ wrapping; a positive value wraps the document to the specified
+ width. Note that width is automatically set to 0 if the
+ `CMARK_OPT_HARDBREAKS` option is set.
+ * The `cmark` executable now allows `-t commonmark` for output as
+ CommonMark. A `--width` option has been added to specify wrapping
+ width.
+ * Added `roundtrip_test` Makefile target. This runs all the spec
+ through the commonmark renderer, and then through the commonmark
+ parser, and compares normalized HTML to the test. All tests pass
+ with the current parser and renderer, giving us some confidence that
+ the commonmark renderer is sufficiently robust. Eventually this
+ should be pythonized and put in the cmake test routine.
+ * Removed an unnecessary check in `blocks.c`. By the time we check
+ for a list start, we've already checked for a horizontal rule, so
+ we don't need to repeat that check here. Thanks to Robin Stocker for
+ pointing out a similar redundancy in commonmark.js.
+ * Fixed bug in `cmark_strbuf_unescape` (`buffer.c`). The old function
+ gave incorrect results on input like `\\*`, since the next backslash
+ would be treated as escaping the `*` instead of being escaped itself.
+ * `scanners.re`: added `_scan_scheme`, `scan_scheme`, used in the
+ commonmark renderer.
+ * Check for `CMAKE_C_COMPILER` (not `CC_COMPILER`) when setting C flags.
+ * Update code examples in documentation, adding new parser option
+ argument, and using `CMARK_OPT_DEFAULT` (Nick Wellnhofer).
+ * Added options parameter to `cmark_markdown_to_html`.
+ * Removed obsolete reference to `CMARK_NODE_LINK_LABEL`.
+ * `make leakcheck` now checks all output formats.
+ * `test/cmark.py`: set default options for `markdown_to_html`.
+ * Warn about buggy re2c versions (Nick Wellnhofer).
+
[0.18.1]
* Build static version of library in default build (#11).