diff --git a/requirements-dev.txt b/requirements-dev.txt
index 1b5d59c..bdbd4f9 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -2,7 +2,7 @@ pytest>=2.8.2
 pytest-pythonpath>=0.3
 tox>=1.8.0
 eth-testrpc==0.3.2
-py-geth>=0.4.0
+py-geth>=0.5.0
 # Until pyethereum > 1.3.6 is released.
 https://github.com/ethereum/pyethereum/tarball/b06829e56e2a3de5276077a611ed8813b6cf5e74
 secp256k1>=0.12.0