diff --git a/requirements.txt b/requirements.txt
index 4a11008..7b5d209 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,4 @@
 web3==5.20.1
 hexbytes==0.2.1
-argparse==1.4.0
\ No newline at end of file
+argparse==1.4.0
+pydantic==1.8.2