diff --git a/python/requirements.txt b/python/requirements.txt
index a57aa4e..9b156cb 100644
--- a/python/requirements.txt
+++ b/python/requirements.txt
@@ -1,5 +1,5 @@
-chainlib-eth==0.4.20
-chainlib==0.4.13
+chainlib-eth==0.4.23
+chainlib==0.4.14
 eth-erc20==0.7.3
 eth-erc721==0.2.1
 eth-erc712==0.0.1