Fix up dep constraint

sfackler · sfackler · commit fdc4a01b1a09 · 2017-07-23T16:50:00.000-07:00
diff --git a/postgres/Cargo.toml b/postgres/Cargo.toml
@@ -78,6 +78,6 @@ chrono = "0.4"
 eui48 = "0.3"
 geo = "0.4"
 rustc-serialize = "0.3"
-serde_json = ">=0.9,<2.0"
+serde_json = "1.0"
 time = "0.1.14"
 uuid = "0.5"
