diff --git a/CHANGELOG b/CHANGELOG
index 236cb0a..21a9ad8 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,6 @@
+- 0.2.12
+	* Breaking upgrade of chainlib.
+	* Implement generic block and tx.
 - 0.2.11
 	* Upgrade shep to handle exception in filestore list
 - 0.2.10
diff --git a/requirements.txt b/requirements.txt
index ccae2e7..c745aeb 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
-chainlib~=0.1.2
-chainqueue~=0.1.15
-chainsyncer~=0.4.7
+chainlib~=0.2.0
+chainqueue~=0.1.16
+chainsyncer~=0.4.9
 confini~=0.6.0
 funga~=0.5.2
 pyxdg~=0.26