diff --git a/plume-common/Cargo.toml b/plume-common/Cargo.toml
index 88889988..aadd464a 100644
--- a/plume-common/Cargo.toml
+++ b/plume-common/Cargo.toml
@@ -38,5 +38,6 @@ branch = "bidi-plume"
 
 [dev-dependencies]
 once_cell = "1.10.0"
+assert-json-diff = "2.0.1"
 
 [features]