diff --git a/test-requirements.txt b/test-requirements.txt
index 35b1163..7dce9c3 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -3,7 +3,7 @@ mock>=2.0.0
 flake8>=3.2.1
 eventlet>=0.19.0
 msgpack>=0.5.6
-cbor2>=5.2.0
+cbor2>=5.6.0
 nose2>=0.6.5
 coverage!=4.5
 cov_core>=1.15.0