diff --git a/src/interfaces.rs b/src/interfaces.rs
index af3764c..b1dad88 100644
--- a/src/interfaces.rs
+++ b/src/interfaces.rs
@@ -21,7 +21,7 @@ impl<'a> From<&'a str> for RepoId {
     }
 }
 
-#[derive(Eq, Hash, PartialEq, Clone, Deserialize, Serialize)]
+#[derive(Eq, Hash, PartialEq, Clone, Copy, Deserialize, Serialize)]
 pub struct DocumentId([u8; 16]);
 
 impl DocumentId {
diff --git a/src/share_policy.rs b/src/share_policy.rs
index d30220c..395068c 100644
--- a/src/share_policy.rs
+++ b/src/share_policy.rs
@@ -176,6 +176,7 @@ where
 }
 
 /// A share policy which always shares documents with all peers
+#[derive(Debug, Clone, Copy)]
 pub struct Permissive;
 
 impl SharePolicy for Permissive {