--- prometheus-0.6.1/Cargo.toml	1970-01-01T00:00:00+00:00
+++ prometheus-0.6.1/Cargo.toml	2019-06-18T01:41:45.385772+00:00
@@ -54,8 +54,7 @@
 version = "0.2"
 
 [dev-dependencies.hyper]
-version = "0.9"
-default-features = false
+version = "0.12"
 [build-dependencies.protobuf-codegen-pure]
 version = "2.0"
 optional = true