diff --git a/Cargo.lock b/Cargo.lock
index 089938ed6d..c73ddb8f32 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -366,15 +366,6 @@ version = "0.22.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "72b3254f16251a8381aa12e40e3c4d2f0199f8c6508fbecb9d91f575e0fbb8c6"
 
-[[package]]
-name = "bincode"
-version = "1.3.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b1f45e9417d87227c7a56d22e471c6206462cba514c7590c09aff4cf6d1ddcad"
-dependencies = [
- "serde",
-]
-
 [[package]]
 name = "bindgen"
 version = "0.69.4"
@@ -3364,9 +3355,9 @@ dependencies = [
 name = "nu-plugin-protocol"
 version = "0.97.2"
 dependencies = [
- "bincode",
  "nu-protocol",
  "nu-utils",
+ "rmp-serde",
  "semver",
  "serde",
  "typetag",
diff --git a/crates/nu-plugin-protocol/Cargo.toml b/crates/nu-plugin-protocol/Cargo.toml
index 45d8fe3a97..1d8aab6a1a 100644
--- a/crates/nu-plugin-protocol/Cargo.toml
+++ b/crates/nu-plugin-protocol/Cargo.toml
@@ -17,7 +17,7 @@ workspace = true
 nu-protocol = { path = "../nu-protocol", version = "0.97.2", features = ["plugin"] }
 nu-utils = { path = "../nu-utils", version = "0.97.2" }
 
-bincode = "1.3"
+rmp-serde = { workspace = true }
 serde = { workspace = true, features = ["derive"] }
 semver = "1.0"
 typetag = "0.2"
diff --git a/crates/nu-plugin-protocol/src/plugin_custom_value/mod.rs b/crates/nu-plugin-protocol/src/plugin_custom_value/mod.rs
index ea2b1551c9..db7ea733d7 100644
--- a/crates/nu-plugin-protocol/src/plugin_custom_value/mod.rs
+++ b/crates/nu-plugin-protocol/src/plugin_custom_value/mod.rs
@@ -142,7 +142,7 @@ impl PluginCustomValue {
     ) -> Result<PluginCustomValue, ShellError> {
         let name = custom_value.type_name();
         let notify_on_drop = custom_value.notify_plugin_on_drop();
-        bincode::serialize(custom_value)
+        rmp_serde::to_vec(custom_value)
             .map(|data| PluginCustomValue::new(name, data, notify_on_drop))
             .map_err(|err| ShellError::CustomValueFailedToEncode {
                 msg: err.to_string(),
@@ -156,7 +156,7 @@ impl PluginCustomValue {
         &self,
         span: Span,
     ) -> Result<Box<dyn CustomValue>, ShellError> {
-        bincode::deserialize::<Box<dyn CustomValue>>(self.data()).map_err(|err| {
+        rmp_serde::from_slice::<Box<dyn CustomValue>>(self.data()).map_err(|err| {
             ShellError::CustomValueFailedToDecode {
                 msg: err.to_string(),
                 span,
diff --git a/crates/nu-plugin-protocol/src/test_util.rs b/crates/nu-plugin-protocol/src/test_util.rs
index 579b1ee758..7d3bfb28ca 100644
--- a/crates/nu-plugin-protocol/src/test_util.rs
+++ b/crates/nu-plugin-protocol/src/test_util.rs
@@ -31,8 +31,8 @@ impl CustomValue for TestCustomValue {
 
 /// A [`TestCustomValue`] serialized as a [`PluginCustomValue`].
 pub fn test_plugin_custom_value() -> PluginCustomValue {
-    let data = bincode::serialize(&expected_test_custom_value() as &dyn CustomValue)
-        .expect("bincode serialization of the expected_test_custom_value() failed");
+    let data = rmp_serde::to_vec(&expected_test_custom_value() as &dyn CustomValue)
+        .expect("MessagePack serialization of the expected_test_custom_value() failed");
 
     PluginCustomValue::new("TestCustomValue".into(), data, false)
 }