diff --git a/dimension_label_experimental.go b/dimension_label_experimental.go
index 78c7e223..1731981b 100644
--- a/dimension_label_experimental.go
+++ b/dimension_label_experimental.go
@@ -136,6 +136,7 @@ func (d *DimensionLabel) URI() (string, error) {
 // AddDimensionLabel adds a dimension label to the array schema.
 func (a *ArraySchema) AddDimensionLabel(dimIndex uint32, name string, order DataOrder, labelType Datatype) error {
 	cLabelName := C.CString(name)
+	defer C.free(unsafe.Pointer(cLabelName))
 	ret := C.tiledb_array_schema_add_dimension_label(a.context.tiledbContext.Get(), a.tiledbArraySchema.Get(),
 		C.uint32_t(dimIndex), cLabelName, C.tiledb_data_order_t(order), C.tiledb_datatype_t(labelType))
 	runtime.KeepAlive(a)
diff --git a/serialize.go b/serialize.go
index d1e1e5e6..5aa803fb 100644
--- a/serialize.go
+++ b/serialize.go
@@ -81,6 +81,7 @@ func DeserializeArrayCreate(buffer *Buffer, serializationType SerializationType,
 	if ret != C.TILEDB_OK {
 		return nil, "", fmt.Errorf("error deserializing array creation request: %w", buffer.context.LastError())
 	}
+	defer C.tiledb_string_free(&tdbString)
 
 	uri, err := stringHandleToString(tdbString)
 	if err != nil {