diff --git a/radicle-cob/src/lib.rs b/radicle-cob/src/lib.rs
index d7068095..83e8319a 100644
--- a/radicle-cob/src/lib.rs
+++ b/radicle-cob/src/lib.rs
@@ -77,7 +77,7 @@ mod change_graph;
 mod trailers;
 
 pub mod change;
-pub use change::store::{Contents, Embed, Manifest, Version};
+pub use change::store::{Contents, Embed, EntryId, Manifest, Version};
 pub use change::Entry;
 
 pub mod history;
diff --git a/radicle-cob/src/object/collaboration/create.rs b/radicle-cob/src/object/collaboration/create.rs
index 9e0f5c8e..9f8db102 100644
--- a/radicle-cob/src/object/collaboration/create.rs
+++ b/radicle-cob/src/object/collaboration/create.rs
@@ -71,7 +71,7 @@ where
     let object_id = init_change.id().into();
 
     storage
-        .update(identifier, &type_name, &object_id, &init_change)
+        .update(identifier, &type_name, &object_id, &init_change.id)
         .map_err(|err| error::Create::Refs { err: Box::new(err) })?;
 
     let history = History::new_from_root(init_change);
diff --git a/radicle-cob/src/object/collaboration/update.rs b/radicle-cob/src/object/collaboration/update.rs
index a4d98da8..6662f956 100644
--- a/radicle-cob/src/object/collaboration/update.rs
+++ b/radicle-cob/src/object/collaboration/update.rs
@@ -96,7 +96,7 @@ where
     )?;
 
     storage
-        .update(identifier, typename, &object_id, &change)
+        .update(identifier, typename, &object_id, &change.id)
         .map_err(|err| error::Update::Refs { err: Box::new(err) })?;
 
     let parents = change.parents.to_vec();
diff --git a/radicle-cob/src/object/storage.rs b/radicle-cob/src/object/storage.rs
index 5ddb3fad..9a6dfe38 100644
--- a/radicle-cob/src/object/storage.rs
+++ b/radicle-cob/src/object/storage.rs
@@ -5,7 +5,7 @@ use std::{collections::BTreeMap, error::Error};
 use git_ext::ref_format::RefString;
 use git_ext::Oid;
 
-use crate::change::Entry;
+use crate::change::EntryId;
 use crate::{ObjectId, TypeName};
 
 /// The [`Reference`]s that refer to the commits that make up a
@@ -78,7 +78,7 @@ pub trait Storage {
         identifier: &Self::Identifier,
         typename: &TypeName,
         object_id: &ObjectId,
-        change: &Entry,
+        entry: &EntryId,
     ) -> Result<(), Self::UpdateError>;
 
     /// Remove a ref to a particular collaborative object
diff --git a/radicle-cob/src/test/storage.rs b/radicle-cob/src/test/storage.rs
index 43b4fd8e..32c3b4fd 100644
--- a/radicle-cob/src/test/storage.rs
+++ b/radicle-cob/src/test/storage.rs
@@ -154,7 +154,7 @@ impl object::Storage for Storage {
         identifier: &Self::Identifier,
         typename: &crate::TypeName,
         object_id: &ObjectId,
-        change: &change::Entry,
+        entry: &change::EntryId,
     ) -> Result<(), Self::UpdateError> {
         let name = format!(
             "refs/rad/{}/cobs/{}/{}",
@@ -162,8 +162,8 @@ impl object::Storage for Storage {
             typename,
             object_id
         );
-        let id = *change.id();
-        self.raw.reference(&name, id.into(), true, "new change")?;
+        self.raw
+            .reference(&name, (*entry).into(), true, "new change")?;
         Ok(())
     }
 
diff --git a/radicle/src/storage/git/cob.rs b/radicle/src/storage/git/cob.rs
index 7a1858c5..29859c84 100644
--- a/radicle/src/storage/git/cob.rs
+++ b/radicle/src/storage/git/cob.rs
@@ -139,17 +139,15 @@ impl cob::object::Storage for Repository {
         identifier: &Self::Identifier,
         typename: &cob::TypeName,
         object_id: &cob::ObjectId,
-        change: &cob::Entry,
+        entry: &cob::EntryId,
     ) -> Result<(), Self::UpdateError> {
         self.backend.reference(
             git::refs::storage::cob(identifier, typename, object_id).as_str(),
-            (*change.id()).into(),
+            (*entry).into(),
             true,
             &format!(
-                "Updating collaborative object '{}/{}' with new change {}",
-                typename,
-                object_id,
-                change.id()
+                "Updating collaborative object '{}/{}' with new entry {}",
+                typename, object_id, entry,
             ),
         )?;
 
@@ -387,17 +385,15 @@ impl<'a> cob::object::Storage for DraftStore<'a> {
         identifier: &Self::Identifier,
         typename: &cob::TypeName,
         object_id: &cob::ObjectId,
-        change: &cob::Entry,
+        entry: &cob::history::EntryId,
     ) -> Result<(), Self::UpdateError> {
         self.repo.backend.reference(
             git::refs::storage::draft::cob(identifier, typename, object_id).as_str(),
-            (*change.id()).into(),
+            (*entry).into(),
             true,
             &format!(
-                "Updating draft collaborative object '{}/{}' with new change {}",
-                typename,
-                object_id,
-                change.id()
+                "Updating draft collaborative object '{}/{}' with new entry {}",
+                typename, object_id, entry,
             ),
         )?;