diff --git a/CHANGELOG b/CHANGELOG
index 6bc3da3acd9df30c8d0dcc1106afd4640b4043a4..b353546c743ac89ae7b23a27223ce293df55cd8a 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,6 @@
+# 0.3.4
+- Raise exception when off-target sequence format is wrong
+
 # 0.3.3
 - Compute prediction for seeds 8-12
 - Prefix off-target feature key result with "off_target"