1 files changed, 7 insertions, 3 deletions
diff --git a/database/src/backends/mod.rs b/database/src/backends/mod.rs
index 4cbb4cf..ba30b46 100644
--- a/database/src/backends/mod.rs
+++ b/database/src/backends/mod.rs
@@ -14,9 +14,13 @@ use std::{path::Path, sync::Arc};
 pub type WriteTxnFunction = dyn FnMut(&mut dyn WriteTransaction) -> Result<()>;
 pub type ReadTxnFunction = dyn FnMut(&dyn ReadTransaction) -> Result<()>;
 
-pub trait Database {
-    fn write_transaction(&self, f: &mut WriteTxnFunction) -> Result<()>;
-    fn read_transaction(&self, f: &mut ReadTxnFunction) -> Result<()>;
+pub trait Database: Send + Sync + 'static {
+    fn write_transaction(
+        &self,
+        f: &mut dyn FnMut(&mut dyn WriteTransaction) -> Result<()>,
+    ) -> Result<()>;
+    fn read_transaction(&self, f: &mut dyn FnMut(&dyn ReadTransaction) -> Result<()>)
+    -> Result<()>;
 }
 pub trait WriteTransaction: ReadTransaction {
     fn set(&mut self, key: &[u8], value: &[u8]) -> Result<()>;