diff --git a/Cargo.toml b/Cargo.toml
index dcd0950b6..048b1a57c 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -98,7 +98,7 @@ semver = { version = "1", features = ["serde"] }
 serde = { version = "1", features = ["serde_derive"] }
 serde-untagged = "0.1"
 serde-value = "0.7"
-serde_json = "1"
+serde_json = { version = "1", features = ["raw_value"] }
 serde_repr = "0.1"
 serde_test = "1"
 sha2 = "0.10"