diff --git a/requirements.txt b/requirements.txt
index 890b85e..ed3f2ed 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-pywin32==227
+pywin32==301
 idna==2.7
 hexbytes==0.1.0
 eth_rlp==0.1.2