diff --git a/tests/core/pyspec/eth2spec/test/altair/unittests/validator/test_validator.py b/tests/core/pyspec/eth2spec/test/altair/unittests/validator/test_validator.py
index fd1b82c4b..cefaaf694 100644
--- a/tests/core/pyspec/eth2spec/test/altair/unittests/validator/test_validator.py
+++ b/tests/core/pyspec/eth2spec/test/altair/unittests/validator/test_validator.py
@@ -8,8 +8,12 @@ from eth2spec.utils import bls
 from eth2spec.utils.bls import only_with_bls
 from eth2spec.test.context import (
     with_altair_and_later,
+    with_configs,
     with_state,
 )
+from eth2spec.test.helpers.constants import (
+    MINIMAL,
+)
 
 rng = random.Random(1337)
 
@@ -91,6 +95,7 @@ def _get_sync_committee_signature(
 
 @only_with_bls()
 @with_altair_and_later
+@with_configs([MINIMAL], reason="too slow")
 @with_state
 def test_process_sync_committee_contributions(phases, spec, state):
     # skip over slots at genesis
@@ -151,6 +156,7 @@ def _get_expected_subnets_by_pubkey(sync_committee_members):
 
 
 @with_altair_and_later
+@with_configs([MINIMAL], reason="too slow")
 @with_state
 def test_compute_subnets_for_sync_committee(state, spec, phases):
     # Transition to the head of the next period
@@ -179,6 +185,7 @@ def test_compute_subnets_for_sync_committee(state, spec, phases):
 
 
 @with_altair_and_later
+@with_configs([MINIMAL], reason="too slow")
 @with_state
 def test_compute_subnets_for_sync_committee_slot_period_boundary(state, spec, phases):
     # Transition to the end of the period