diff --git a/CHANGELOG.md b/CHANGELOG.md
index f03864d1..d349941d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,8 @@
+# v2.0.0
+
+- Add lzma support via xz-decompress. This uses webassembly, so it is a major
+  version bump
+
 # v1.7.4
 
 - Fix import of bzip2 module
diff --git a/README.md b/README.md
index 80b831cd..55f24916 100644
--- a/README.md
+++ b/README.md
@@ -12,8 +12,9 @@ browser.
 - Can use .crai indexes out of the box, for efficient sequence fetching, but
   also has an [index API](#craiindex) that would allow use with other index
   types
-- Does implement bzip2 but not lzma codecs (yet); if this is important to your
-  use case, please file an issue
+- Has preliminary support for bzip2 and lzma codecs. lzma requires the latest
+  @gmod/cram version, and uses webassembly. If you find you are unable to
+  compile it, you can try downgrading
 
 ## Install