diff --git a/requirements_opacity_api.txt b/requirements_opacity_api.txt
index 4563853..bebec37 100644
--- a/requirements_opacity_api.txt
+++ b/requirements_opacity_api.txt
@@ -10,7 +10,7 @@ cryptography==2.9
 cytoolz==0.10.1
 docutils==0.16
 eth-abi==2.1.1
-eth-account==0.4.0
+eth-account==0.5.9
 eth-hash==0.2.0
 eth-keyfile==0.5.1
 eth-keys==0.2.4