diff --git a/src/models/invoices/types.rs b/src/models/invoices/types.rs
index e27855d..b6b6f39 100644
--- a/src/models/invoices/types.rs
+++ b/src/models/invoices/types.rs
@@ -13,6 +13,7 @@ pub enum InvoiceStatus {
     Open,
     Paid,
     Forwarded,
+    Timeout,
 }
 
 impl From<&InvoiceStatus> for i16 {
@@ -21,6 +22,7 @@ impl From<&InvoiceStatus> for i16 {
             InvoiceStatus::Open => 1,
             InvoiceStatus::Paid => 2,
             InvoiceStatus::Forwarded => 3,
+            InvoiceStatus::Timeout => 4,
         }
     }
 }
@@ -33,6 +35,7 @@ impl TryFrom<i16> for InvoiceStatus {
             1 => Self::Open,
             2 => Self::Paid,
             3 => Self::Forwarded,
+            4 => Self::Timeout,
             _ => return Err(ConversionError),
         };
         Ok(invoice_status)
diff --git a/src/monero/subscriptions.rs b/src/monero/subscriptions.rs
index 45f4659..04aa275 100644
--- a/src/monero/subscriptions.rs
+++ b/src/monero/subscriptions.rs
@@ -27,6 +27,8 @@ use crate::models::{
 };
 use super::wallet::{send_monero, DEFAULT_ACCOUNT, MoneroError};
 
+const INVOICE_TIMEOUT: i64 = 30 * 60; // 30 minutes
+
 pub async fn check_monero_subscriptions(
     instance: &Instance,
     config: &MoneroConfig,
@@ -48,6 +50,15 @@ pub async fn check_monero_subscriptions(
         InvoiceStatus::Open,
     ).await?;
     for invoice in open_invoices {
+        let invoice_age = Utc::now() - invoice.created_at;
+        if invoice_age.num_seconds() >= INVOICE_TIMEOUT {
+            set_invoice_status(
+                db_client,
+                &invoice.id,
+                InvoiceStatus::Timeout,
+            ).await?;
+            continue;
+        };
         let address = Address::from_str(&invoice.payment_address)?;
         let address_index = wallet_client.get_address_index(address).await?;
         address_waitlist.push(address_index.minor);