diff --git a/candle-pyo3/src/lib.rs b/candle-pyo3/src/lib.rs
index b8695cc8a..3f12cbe8a 100644
--- a/candle-pyo3/src/lib.rs
+++ b/candle-pyo3/src/lib.rs
@@ -1456,7 +1456,7 @@ fn save_gguf(path: &str, tensors: PyObject, metadata: PyObject, py: Python<'_>)
 
     let converted_metadata: Vec<_> = metadata
         .iter()
-        .map(|(name, value)| (name.as_str(), value))
+        .map(|(name, value)| (name.as_str(), value.clone()))
         .collect();
 
     let converted_tensors: Vec<_> = tensors