diff --git a/cryptarchia/cryptarchia.py b/cryptarchia/cryptarchia.py
index 1981e69..c59b6d0 100644
--- a/cryptarchia/cryptarchia.py
+++ b/cryptarchia/cryptarchia.py
@@ -1,4 +1,4 @@
-from typing import TypeAlias, List, Optional, Dict
+from typing import TypeAlias, List, Dict
 from hashlib import sha256, blake2b
 from math import floor
 from copy import deepcopy
diff --git a/cryptarchia/test_common.py b/cryptarchia/test_common.py
index b032b6f..78cbd20 100644
--- a/cryptarchia/test_common.py
+++ b/cryptarchia/test_common.py
@@ -1,7 +1,5 @@
 from .cryptarchia import (
     Config,
-    TimeConfig,
-    Id,
     Slot,
     Coin,
     BlockHeader,
diff --git a/cryptarchia/test_fork_choice.py b/cryptarchia/test_fork_choice.py
index 5eaae15..2acaae7 100644
--- a/cryptarchia/test_fork_choice.py
+++ b/cryptarchia/test_fork_choice.py
@@ -1,7 +1,4 @@
 from unittest import TestCase
-from itertools import repeat
-import numpy as np
-import hashlib
 
 from copy import deepcopy
 from cryptarchia.cryptarchia import (
@@ -9,8 +6,6 @@ from cryptarchia.cryptarchia import (
     ghost_maxvalid_bg,
     BlockHeader,
     Slot,
-    Id,
-    MockLeaderProof,
     Coin,
     Follower,
     common_prefix_depth,
diff --git a/cryptarchia/test_leader.py b/cryptarchia/test_leader.py
index 136f964..08d662a 100644
--- a/cryptarchia/test_leader.py
+++ b/cryptarchia/test_leader.py
@@ -2,16 +2,7 @@ from unittest import TestCase
 
 import numpy as np
 
-from .cryptarchia import (
-    Leader,
-    Config,
-    EpochState,
-    LedgerState,
-    Coin,
-    phi,
-    TimeConfig,
-    Slot,
-)
+from .cryptarchia import Leader, EpochState, LedgerState, Coin, phi, Slot
 from .test_common import mk_config
 
 
diff --git a/cryptarchia/test_ledger_state_update.py b/cryptarchia/test_ledger_state_update.py
index d71c7aa..92e2e83 100644
--- a/cryptarchia/test_ledger_state_update.py
+++ b/cryptarchia/test_ledger_state_update.py
@@ -2,17 +2,7 @@ from unittest import TestCase
 
 import numpy as np
 
-from .cryptarchia import (
-    Follower,
-    TimeConfig,
-    BlockHeader,
-    Config,
-    Coin,
-    LedgerState,
-    MockLeaderProof,
-    Slot,
-    Id,
-)
+from .cryptarchia import Follower, Coin
 
 from .test_common import mk_config, mk_block, mk_genesis_state
 
diff --git a/cryptarchia/test_orphaned_proofs.py b/cryptarchia/test_orphaned_proofs.py
index 5cce7ff..0114464 100644
--- a/cryptarchia/test_orphaned_proofs.py
+++ b/cryptarchia/test_orphaned_proofs.py
@@ -1,19 +1,8 @@
 from unittest import TestCase
-from itertools import repeat
-import numpy as np
-import hashlib
 
-from copy import deepcopy
-from cryptarchia.cryptarchia import (
-    BlockHeader,
-    Slot,
-    Id,
-    MockLeaderProof,
-    Coin,
-    Follower,
-)
+from cryptarchia.cryptarchia import Coin, Follower
 
-from .test_common import mk_chain, mk_config, mk_genesis_state, mk_block
+from .test_common import mk_config, mk_genesis_state, mk_block
 
 
 class TestOrphanedProofs(TestCase):
diff --git a/cryptarchia/test_stake_relativization.py b/cryptarchia/test_stake_relativization.py
index 91a0e3a..cfa9473 100644
--- a/cryptarchia/test_stake_relativization.py
+++ b/cryptarchia/test_stake_relativization.py
@@ -1,5 +1,4 @@
 from unittest import TestCase
-from dataclasses import dataclass
 import itertools
 
 import numpy as np