diff --git a/crates/uv-resolver/src/manifest.rs b/crates/uv-resolver/src/manifest.rs
index 8923e112b..d9eb6e44a 100644
--- a/crates/uv-resolver/src/manifest.rs
+++ b/crates/uv-resolver/src/manifest.rs
@@ -6,7 +6,7 @@ use uv_normalize::PackageName;
 use crate::preferences::Preference;
 
 /// A manifest of requirements, constraints, and preferences.
-#[derive(Debug)]
+#[derive(Clone, Debug)]
 pub struct Manifest {
     pub(crate) requirements: Vec<Requirement>,
     pub(crate) constraints: Vec<Requirement>,
diff --git a/crates/uv-resolver/src/preferences.rs b/crates/uv-resolver/src/preferences.rs
index 3d966454f..3d068b80d 100644
--- a/crates/uv-resolver/src/preferences.rs
+++ b/crates/uv-resolver/src/preferences.rs
@@ -19,7 +19,7 @@ pub enum PreferenceError {
 }
 
 /// A pinned requirement, as extracted from a `requirements.txt` file.
-#[derive(Debug)]
+#[derive(Clone, Debug)]
 pub struct Preference {
     requirement: Requirement,
     hashes: Vec<Hashes>,