diff --git a/src/db/mod.rs b/src/db/mod.rs
index 7af285b..41aec9f 100644
--- a/src/db/mod.rs
+++ b/src/db/mod.rs
@@ -1024,6 +1024,17 @@ impl SqliteClipboardDb {
   }
 
   /// Clean up all expired entries. Returns count deleted.
+  pub fn expire_ttl_entries(&self) -> Result<usize, StashError> {
+    self
+      .conn
+      .execute(
+        "UPDATE clipboard SET is_expired = 1 WHERE expires_at IS NOT NULL AND \
+         (is_expired IS NULL OR is_expired = 0)",
+        [],
+      )
+      .map_err(|e| StashError::Trim(e.to_string().into()))
+  }
+
   pub fn cleanup_expired(&self) -> Result<usize, StashError> {
     let now = Self::now();
     self
diff --git a/src/main.rs b/src/main.rs
index f006d36..a711c8d 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -169,6 +169,13 @@ enum DbAction {
     ask: bool,
   },
 
+  /// Immediately expire all entries with a TTL
+  Expire {
+    /// Ask for confirmation before expiring
+    #[arg(long)]
+    ask: bool,
+  },
+
   /// Optimize database using VACUUM
   Vacuum,
 
@@ -406,6 +413,28 @@ fn main() -> eyre::Result<()> {
               }
             }
           },
+          DbAction::Expire { ask } => {
+            let should_proceed = !ask
+              || confirm(
+                "Are you sure you want to immediately expire all entries with \
+                 a TTL?",
+              );
+            if should_proceed {
+              match db.expire_ttl_entries() {
+                Ok(0) => {
+                  println!("no entries with a TTL to expire");
+                },
+                Ok(count) => {
+                  println!("marked {count} entries as expired");
+                },
+                Err(e) => {
+                  log::error!("failed to expire entries: {e}");
+                },
+              }
+            } else {
+              log::info!("db expire command aborted by user.");
+            }
+          },
           DbAction::Vacuum => {
             match db.vacuum() {
               Ok(()) => {