diff --git a/CHANGELOG.md b/CHANGELOG.md
index f059d4705..2bd6a01b3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,9 @@ At the moment this project **does not** adhere to
 
 ## [[Unreleased]](https://github.com/entropyxyz/entropy-core/compare/release/v0.0.10...master)
 
+### Added
+- Add ValidatorSubgroupRotated event ([#618](https://github.com/entropyxyz/entropy-core/pull/618))
+
 ## [0.0.10](https://github.com/entropyxyz/entropy-core/compare/release/v0.0.9...release/v0.0.10) - 2024-01-24
 
 A lot of the changes introduced in this release are program related.
diff --git a/pallets/staking/src/benchmarking.rs b/pallets/staking/src/benchmarking.rs
index e85457405..c25362a51 100644
--- a/pallets/staking/src/benchmarking.rs
+++ b/pallets/staking/src/benchmarking.rs
@@ -15,6 +15,7 @@
 
 //! Benchmarking setup for pallet-propgation
 #![allow(unused_imports)]
+use entropy_shared::SIGNING_PARTY_SIZE;
 use frame_benchmarking::{account, benchmarks, impl_benchmark_test_suite, whitelisted_caller};
 use frame_support::{
     assert_ok, ensure,
@@ -178,7 +179,11 @@ benchmarks! {
     let current_validators = create_validators::<T>(c, SEED);
     let new_validators = create_validators::<T>(n, SEED_2);
     let _ =Staking::<T>::new_session_handler(&current_validators);
-
+    let mut current_subgroups: Vec<Vec<<T as pallet_session::Config>::ValidatorId>> = vec![];
+    for signing_group in 0..SIGNING_PARTY_SIZE {
+      let current_subgroup = SigningGroups::<T>::get(signing_group as u8).unwrap();
+      current_subgroups.push(current_subgroup)
+    };
 }: {
     let _ = Staking::<T>::new_session_handler(&new_validators);
 } verify {
@@ -188,6 +193,12 @@ benchmarks! {
             assert!(!new_validators.contains(&one_current_validator[0]));
         }
     } else {
+      let mut new_subgroups: Vec<Vec<<T as pallet_session::Config>::ValidatorId>> = vec![];
+      for signing_group in 0..SIGNING_PARTY_SIZE {
+        let new_subgroup = SigningGroups::<T>::get(signing_group as u8).unwrap();
+        new_subgroups.push(new_subgroup)
+      };
+        assert_last_event::<T>(Event::<T>::ValidatorSubgroupsRotated(current_subgroups,  new_subgroups).into());
         assert!(new_validators.contains(&one_current_validator[0]));
     }
 }
diff --git a/pallets/staking/src/lib.rs b/pallets/staking/src/lib.rs
index 23d7b8f24..d467d2da9 100644
--- a/pallets/staking/src/lib.rs
+++ b/pallets/staking/src/lib.rs
@@ -239,6 +239,11 @@ pub mod pallet {
         NodeInfoRemoved(T::AccountId),
         /// Validator sync status changed [who, sync_status]
         ValidatorSyncStatus(<T as pallet_session::Config>::ValidatorId, bool),
+        /// Validators subgroups rotated [old, new]
+        ValidatorSubgroupsRotated(
+            Vec<Vec<<T as pallet_session::Config>::ValidatorId>>,
+            Vec<Vec<<T as pallet_session::Config>::ValidatorId>>,
+        ),
     }
 
     #[pallet::call]
@@ -425,7 +430,6 @@ pub mod pallet {
                     unplaced_validators_set.push(new_validator.clone());
                 }
             }
-
             // Evenly distribute new validators.
             while let Some(curr) = unplaced_validators_set.pop() {
                 let mut min_sg_len = u64::MAX;
@@ -445,6 +449,10 @@ pub mod pallet {
                 pallet_staking_extension::SigningGroups::<T>::remove(sg as u8);
                 pallet_staking_extension::SigningGroups::<T>::insert(sg as u8, vs);
             }
+            Self::deposit_event(Event::ValidatorSubgroupsRotated(
+                curr_validators_set.clone(),
+                new_validators_set.clone(),
+            ));
             frame_system::Pallet::<T>::register_extra_weight_unchecked(
                 <T as pallet::Config>::WeightInfo::new_session_handler_helper(
                     curr_validators_set.len() as u32,