diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5d3fc0a..4d8f28c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,6 @@
 ## 0.2.0 (2023-03-24)
 
+- Implemented `Mmr` and related structs (#67)
 - Implemented `MerkleStore` (#93, #94, #95, #107 #112).
 - Added benchmarks for `MerkleStore` vs. other structs (#97).
 - Added Merkle path containers (#99).
diff --git a/README.md b/README.md
index f595325..365c7c7 100644
--- a/README.md
+++ b/README.md
@@ -16,6 +16,7 @@ For performance benchmarks of these hash functions and their comparison to other
 * `SimpleSmt`: a Sparse Merkle Tree, mapping 63-bit keys to 4-element leaf values.
 * `MerklePathSet`: a collection of Merkle authentication paths all resolving to the same root. The length of the paths can be at most 64.
 * `MerkleStore`: a collection of Merkle trees of different heights designed to efficiently store trees with common subtrees.
+* `Mmr`: a Merkle mountain range structure designed to function as an append-only log.
 
 The module also contains additional supporting components such as `NodeIndex`, `MerklePath`,  and `MerkleError`  to assist with tree indexation, opening proofs, and reporting inconsistent arguments/state.