diff --git a/satrs/Cargo.toml b/satrs/Cargo.toml
index 9165b29..88fe247 100644
--- a/satrs/Cargo.toml
+++ b/satrs/Cargo.toml
@@ -26,7 +26,7 @@ thiserror = { version = "2", default-features = false }
 hashbrown = { version = ">=0.14, <=0.15", optional = true }
 static_cell = { version = "2", optional = true }
 dyn-clone = { version = "1", optional = true }
-heapless = { version = "0.8", optional = true }
+heapless = { version = "0.9", optional = true }
 downcast-rs = { version = "2", default-features = false, optional = true }
 bus = { version = "2.2", optional = true }
 crossbeam-channel = { version = "0.5", default-features = false, optional = true }
diff --git a/satrs/src/pus/event_man.rs b/satrs/src/pus/event_man.rs
index 086e9d5..501bb44 100644
--- a/satrs/src/pus/event_man.rs
+++ b/satrs/src/pus/event_man.rs
@@ -46,7 +46,7 @@ pub mod heapless_mod {
     //       regular Event type again.
     #[derive(Default)]
     pub struct HeaplessPusMgmtBackendProvider<const N: usize, Provider: GenericEvent> {
-        disabled: heapless::FnvIndexSet<LargestEventRaw, N>,
+        disabled: heapless::index_set::FnvIndexSet<LargestEventRaw, N>,
         phantom: PhantomData<Provider>,
     }