diff --git a/geneit_backend/src/connections/redis_connection.rs b/geneit_backend/src/connections/redis_connection.rs
index d3f8692..71276b0 100644
--- a/geneit_backend/src/connections/redis_connection.rs
+++ b/geneit_backend/src/connections/redis_connection.rs
@@ -45,7 +45,7 @@ where
 {
     let value_str = serde_json::to_string(value)?;
 
-    execute_request(|conn| Ok(conn.set_ex(key, value_str, lifetime.as_secs() as usize)?))?;
+    execute_request(|conn| Ok(conn.set_ex(key, value_str, lifetime.as_secs() as u64)?))?;
 
     Ok(())
 }