diff --git a/Cargo.lock b/Cargo.lock
index f2630fedf..cdeeb18be 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -6133,7 +6133,6 @@ dependencies = [
  "restate-types",
  "schemars",
  "serde",
- "serde_json",
  "serde_with",
  "static_assertions",
  "strum 0.26.2",
diff --git a/crates/core/Cargo.toml b/crates/core/Cargo.toml
index edd025c05..6c7933e63 100644
--- a/crates/core/Cargo.toml
+++ b/crates/core/Cargo.toml
@@ -48,7 +48,6 @@ prost-types = { workspace = true }
 rand = { workspace = true }
 schemars = { workspace = true, optional = true }
 serde = { workspace = true }
-serde_json = { workspace = true}
 serde_with = { workspace = true }
 static_assertions = { workspace = true }
 strum = { workspace = true }