diff --git a/beacon_node/beacon_chain/tests/sync_committee_verification.rs b/beacon_node/beacon_chain/tests/sync_committee_verification.rs
index da1da0f998b..beeea37e622 100644
--- a/beacon_node/beacon_chain/tests/sync_committee_verification.rs
+++ b/beacon_node/beacon_chain/tests/sync_committee_verification.rs
@@ -484,7 +484,7 @@ fn aggregated_gossip_verification() {
     assert_invalid!(
         "sync contribution created with incorrect sync committee",
         next_valid_contribution.clone(),
-        SyncCommitteeError::InvalidSignature
+        SyncCommitteeError::InvalidSignature | SyncCommitteeError::AggregatorNotInCommittee { .. }
     );
 }
 
diff --git a/consensus/types/src/consts.rs b/consensus/types/src/consts.rs
index 64dfad5ecd7..04e8e60ee55 100644
--- a/consensus/types/src/consts.rs
+++ b/consensus/types/src/consts.rs
@@ -9,7 +9,7 @@ pub mod altair {
     pub const PROPOSER_WEIGHT: u64 = 8;
     pub const WEIGHT_DENOMINATOR: u64 = 64;
     pub const SYNC_COMMITTEE_SUBNET_COUNT: u64 = 4;
-    pub const TARGET_AGGREGATORS_PER_SYNC_SUBCOMMITTEE: u64 = 4;
+    pub const TARGET_AGGREGATORS_PER_SYNC_SUBCOMMITTEE: u64 = 16;
 
     pub const PARTICIPATION_FLAG_WEIGHTS: [u64; NUM_FLAG_INDICES] = [
         TIMELY_SOURCE_WEIGHT,
diff --git a/testing/ef_tests/Makefile b/testing/ef_tests/Makefile
index 4752433f679..8bfc0dba28c 100644
--- a/testing/ef_tests/Makefile
+++ b/testing/ef_tests/Makefile
@@ -1,4 +1,4 @@
-TESTS_TAG := v1.1.0-alpha.8
+TESTS_TAG := v1.1.0-beta.1
 TESTS = general minimal mainnet
 TARBALLS = $(patsubst %,%-$(TESTS_TAG).tar.gz,$(TESTS))