diff --git a/CHANGELOG b/CHANGELOG
new file mode 100644
index 0000000..7d2f21d
--- /dev/null
+++ b/CHANGELOG
@@ -0,0 +1,11 @@
+
+## 3.1.4
+
+- sort, uniq, group and sort_uniq combinators implemented
+- some conversion functions that use Sequence.t2
+- infix operators in Sequence.Infix
+- Sequence.t2 type for efficient iteration on pairs of elements
+- some combinators are adapted to Sequence.t2
+- zip, unzip and zip_i to convert between t and t2
+- added scan combinator
+
diff --git a/META b/META
index 31a82d1..180ef23 100644
--- a/META
+++ b/META
@@ -1,5 +1,5 @@
 name="sequence"
-version="0.1"
+version="0.3.4"
 description="Abstract sequences of elements, for conversion into and from data structures"
 requires=""
 archive(byte) = "sequence.cma"