diff --git a/CHANGELOG.md b/CHANGELOG.md
index c8bd043b837..352099f0de0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -23,6 +23,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - OTA: Allow specifying image size to speed up erase
 - Bluetooth: New methods `EspBleGap::start_scanning` and `EspBleGap::stop_scanning`
 - New example, `bt_ble_gap_scanner` to demonstrate usage of added ble scanning methods
+- Add #[must_use] annotations to event loop types with drop handlers.
 
 ## [0.51.0] - 2025-01-15
 
diff --git a/src/eventloop.rs b/src/eventloop.rs
index 64cd5685e1d..6e054434468 100644
--- a/src/eventloop.rs
+++ b/src/eventloop.rs
@@ -331,6 +331,7 @@ where
     }
 }
 
+#[must_use = "Event subscription is unregistered when handle is dropped"]
 pub struct EspSubscription<'a, T>
 where
     T: EspEventLoopType,