diff --git a/packages/augur-core/requirements.txt b/packages/augur-core/requirements.txt
index 0fbb29610e9..1c43d16ca5d 100644
--- a/packages/augur-core/requirements.txt
+++ b/packages/augur-core/requirements.txt
@@ -5,7 +5,7 @@
 #    pip-compile --output-file requirements.txt requirements.in
 #
 asn1crypto==0.24.0        # via coincurve
-cffi==1.11.1              # via coincurve
+cffi==1.11.5              # via coincurve
 coincurve==6.0.0          # via ethereum
 ethereum==2.1.4
 future==0.16.0            # via ethereum