diff --git a/01.workspace/heave/src/fun/sqlite_persist_catalog.rs b/01.workspace/heave/src/fun/sqlite_persist_catalog.rs
index 42edd3c..45a3dbd 100644
--- a/01.workspace/heave/src/fun/sqlite_persist_catalog.rs
+++ b/01.workspace/heave/src/fun/sqlite_persist_catalog.rs
@@ -33,7 +33,7 @@ fn write_attribute(
     transaction: &rusqlite::Transaction,
 ) -> result::Result<(), FailedTo> {
     let column = column(&attribute.value);
-    let attribute_values = (&attribute.id, &entity.id, &attribute.value.to_string());
+    let attribute_values = (&attribute.id, &entity.id, &attribute.value);
     let insert_attribute_statement =
         INSERT_ATTRIBUTE_STATEMENT_TEMPLATE.replace("{column}", column);
     transaction
diff --git a/01.workspace/heave/src/imp/mod.rs b/01.workspace/heave/src/imp/mod.rs
index 295bf6c..64775a2 100644
--- a/01.workspace/heave/src/imp/mod.rs
+++ b/01.workspace/heave/src/imp/mod.rs
@@ -21,6 +21,7 @@ pub mod f64_try_from_value;
 pub mod i32_try_from_value;
 pub mod i64_try_from_value;
 pub mod string_try_from_value;
+pub mod to_sql_value;
 pub mod u32_try_from_value;
 pub mod value_from_bool;
 pub mod value_from_f64;
diff --git a/01.workspace/heave/src/imp/to_sql_value.rs b/01.workspace/heave/src/imp/to_sql_value.rs
new file mode 100644
index 0000000..a5e3b8a
--- /dev/null
+++ b/01.workspace/heave/src/imp/to_sql_value.rs
@@ -0,0 +1,13 @@
+use crate::*;
+
+impl rusqlite::ToSql for Value {
+    fn to_sql(&self) -> std::result::Result<rusqlite::types::ToSqlOutput<'_>, rusqlite::Error> {
+        match self {
+            Value::Bool(value) => Ok(rusqlite::types::ToSqlOutput::from(*value as i64)),
+            Value::Real(value) => Ok(rusqlite::types::ToSqlOutput::from(*value)),
+            Value::SignedInt(value) => Ok(rusqlite::types::ToSqlOutput::from(*value)),
+            Value::Text(value) => Ok(rusqlite::types::ToSqlOutput::from(value.to_string())),
+            Value::UnsignedInt(value) => Ok(rusqlite::types::ToSqlOutput::from(*value as i64)),
+        }
+    }
+}