diff --git a/src/main.rs b/src/main.rs
index 8599332..6cfdeee 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -15,9 +15,10 @@ use utils::{parse_human_duration, HumanDisplay};
 struct Cli {
 	#[clap(subcommand)]
 	command: Option<Commands>,
-
 	#[clap(short, long, help = "location for database file")]
 	db_path: Option<String>,
+	#[clap(long, help = "show completed tasks")]
+	old: bool,
 }
 
 #[derive(Subcommand)]
@@ -69,7 +70,7 @@ fn main() {
 			let mut found = false;
 			let mut to_remove: Option<Memo> = None;
 			if let Some(re) = rex.ok() {
-				for memo in storage.all().unwrap() {
+				for memo in storage.all(false).unwrap() {
 					if re.is_match(memo.body.as_str()) {
 						if many {
 							storage.del(memo.id).unwrap();
@@ -97,7 +98,7 @@ fn main() {
 			println!("[-] task #{} deleted", id);
 		}
 		None => {
-			let all = storage.all().unwrap();
+			let all = storage.all(args.old).unwrap();
 			if all.len() < 1 {
 				println!("[ ] nothing to remember");
 			}
diff --git a/src/storage.rs b/src/storage.rs
index f700a90..f708559 100644
--- a/src/storage.rs
+++ b/src/storage.rs
@@ -25,7 +25,7 @@ impl fmt::Display for Memo {
 }
 
 pub trait MemoStorage {
-	fn all(&self) -> Result<Vec<Memo>, Error>;
+	fn all(&self, done: bool) -> Result<Vec<Memo>, Error>;
 	fn add(&self, body: &str, due: Option<DateTime<Utc>>) -> Result<(), Error>;
 	fn del(&self, id: u32) -> Result<bool, Error>;
 	fn get(&self, id: u32) -> Result<Memo, Error>;
@@ -44,7 +44,8 @@ pub fn open_sqlite_storage(path: &str) -> Result<SQLiteStorage, Error> {
 		"CREATE TABLE IF NOT EXISTS memo (
 			id INTEGER PRIMARY KEY,
 			body TEXT NOT NULL,
-			due DATETIME
+			due DATETIME,
+			done BOOL DEFAULT FALSE
 		);",
 		[],
 	)?;
@@ -52,7 +53,7 @@ pub fn open_sqlite_storage(path: &str) -> Result<SQLiteStorage, Error> {
 }
 
 impl MemoStorage for SQLiteStorage {
-	fn all(&self) -> Result<Vec<Memo>, Error> {
+	fn all(&self, done: bool) -> Result<Vec<Memo>, Error> {
 		let mut results = Vec::new();
 
 		/*
@@ -62,8 +63,10 @@ impl MemoStorage for SQLiteStorage {
 		 */
 
 		{
-			let mut statement = self.conn.prepare("SELECT * FROM memo WHERE due IS NOT NULL ORDER BY due, id")?;
-			let mut rows = statement.query([])?;
+			let mut statement = self.conn.prepare(
+				"SELECT * FROM memo WHERE due IS NOT NULL AND done = ? ORDER BY due, id",
+			)?;
+			let mut rows = statement.query(params![done as u8])?;
 
 			while let Some(row) = rows.next()? {
 				results.push(Memo {
@@ -75,8 +78,10 @@ impl MemoStorage for SQLiteStorage {
 		}
 
 		{
-			let mut statement = self.conn.prepare("SELECT * FROM memo WHERE due IS NULL ORDER BY due, id")?;
-			let mut rows = statement.query([])?;
+			let mut statement = self
+				.conn
+				.prepare("SELECT * FROM memo WHERE due IS NULL AND done = ? ORDER BY due, id")?;
+			let mut rows = statement.query(params![done as u8])?;
 
 			while let Some(row) = rows.next()? {
 				results.push(Memo {
@@ -107,7 +112,7 @@ impl MemoStorage for SQLiteStorage {
 	fn del(&self, id: u32) -> Result<bool, Error> {
 		let count = self
 			.conn
-			.execute("DELETE FROM memo WHERE id = ?", params![id])?;
+			.execute("UPDATE memo SET done = 1 WHERE id = ?", params![id])?;
 		if count > 0 {
 			return Ok(true);
 		} else {
@@ -116,14 +121,16 @@ impl MemoStorage for SQLiteStorage {
 	}
 
 	fn get(&self, id: u32) -> Result<Memo, Error> {
-		return Ok(self
-			.conn
-			.query_row("SELECT * FROM memo WHERE id = ?", params![id], |row| {
+		return Ok(self.conn.query_row(
+			"SELECT * FROM memo WHERE id = ? AND done = 0",
+			params![id],
+			|row| {
 				return Ok(Memo {
 					id: row.get(0)?,
 					body: row.get(1)?,
 					due: row.get(2).unwrap_or(None),
 				});
-			})?);
+			},
+		)?);
 	}
 }