diff --git a/hub/herald/env.py b/hub/herald/env.py
index 5a78f7f..687491e 100644
--- a/hub/herald/env.py
+++ b/hub/herald/env.py
@@ -12,7 +12,8 @@ class ServerEnv(Env):
                  database_query_timeout=None, elastic_notifier_host=None, elastic_notifier_port=None,
                  blocking_channel_ids=None, filtering_channel_ids=None, peer_hubs=None, peer_announce=None,
                  index_address_status=None, address_history_cache_size=None, daemon_ca_path=None,
-                 merkle_cache_size=None, resolved_url_cache_size=None, tx_cache_size=None):
+                 merkle_cache_size=None, resolved_url_cache_size=None, tx_cache_size=None,
+                 history_tx_cache_size=None):
         super().__init__(db_dir, max_query_workers, chain, reorg_limit, prometheus_port, cache_all_tx_hashes,
                          cache_all_claim_txos, blocking_channel_ids, filtering_channel_ids, index_address_status)
         self.daemon_url = daemon_url if daemon_url is not None else self.required('DAEMON_URL')
@@ -59,6 +60,8 @@ class ServerEnv(Env):
             'RESOLVED_URL_CACHE_SIZE', 32768)
         self.tx_cache_size = tx_cache_size if tx_cache_size is not None else self.integer(
             'TX_CACHE_SIZE', 32768)
+        self.history_tx_cache_size = history_tx_cache_size if history_tx_cache_size is not None else \
+            self.integer('HISTORY_TX_CACHE_SIZE', 524288)
 
     @classmethod
     def contribute_to_arg_parser(cls, parser):
@@ -123,6 +126,11 @@ class ServerEnv(Env):
                             default=cls.integer('TX_CACHE_SIZE', 32768),
                             help="Size of the lru cache of transactions. "
                                  "Can be set in the env with 'TX_CACHE_SIZE'")
+        parser.add_argument('--history_tx_cache_size', type=int,
+                            default=cls.integer('HISTORY_TX_CACHE_SIZE', 524288),
+                            help="Size of the lfu cache of txids in transaction histories for addresses. "
+                                 "Can be set in the env with 'HISTORY_TX_CACHE_SIZE'")
+
     @classmethod
     def from_arg_parser(cls, args):
         return cls(
@@ -140,5 +148,5 @@ class ServerEnv(Env):
             elastic_notifier_port=args.elastic_notifier_port, index_address_status=args.index_address_statuses,
             address_history_cache_size=args.address_history_cache_size, daemon_ca_path=args.daemon_ca_path,
             merkle_cache_size=args.merkle_cache_size, resolved_url_cache_size=args.resolved_url_cache_size,
-            tx_cache_size=args.tx_cache_size
+            tx_cache_size=args.tx_cache_size, history_tx_cache_size=args.history_tx_cache_size
         )
diff --git a/hub/herald/session.py b/hub/herald/session.py
index e3eff23..99e29e5 100644
--- a/hub/herald/session.py
+++ b/hub/herald/session.py
@@ -214,11 +214,11 @@ class SessionManager:
         )
         self.running = False
         # hashX: List[int]
-        self.hashX_raw_history_cache = LFUCacheWithMetrics(2 ** 16, metric_name='raw_history', namespace=NAMESPACE)
+        self.hashX_raw_history_cache = LFUCacheWithMetrics(env.hashX_history_cache_size, metric_name='raw_history', namespace=NAMESPACE)
         # hashX: List[CachedAddressHistoryItem]
-        self.hashX_history_cache = LFUCacheWithMetrics(2 ** 14, metric_name='full_history', namespace=NAMESPACE)
+        self.hashX_history_cache = LFUCacheWithMetrics(env.hashX_history_cache_size, metric_name='full_history', namespace=NAMESPACE)
         # tx_num: Tuple[txid, height]
-        self.history_tx_info_cache = LFUCacheWithMetrics(2 ** 17, metric_name='history_tx', namespace=NAMESPACE)
+        self.history_tx_info_cache = LFUCacheWithMetrics(env.history_tx_cache_size, metric_name='history_tx', namespace=NAMESPACE)
 
     def clear_caches(self):
         self.resolve_cache.clear()
diff --git a/hub/scribe/env.py b/hub/scribe/env.py
index 281f18b..e0a478e 100644
--- a/hub/scribe/env.py
+++ b/hub/scribe/env.py
@@ -18,7 +18,7 @@ class BlockchainEnv(Env):
             if isinstance(rebuild_address_status_from_height, int) else -1
         self.daemon_ca_path = daemon_ca_path if daemon_ca_path else None
         self.history_tx_cache_size = history_tx_cache_size if history_tx_cache_size is not None else \
-            self.integer('HISTORY_TX_CACHE_SIZE', 262144)
+            self.integer('HISTORY_TX_CACHE_SIZE', 524288)
 
     @classmethod
     def contribute_to_arg_parser(cls, parser):
@@ -42,9 +42,9 @@ class BlockchainEnv(Env):
                             help="Rebuild address statuses, set to 0 to reindex all address statuses or provide a "
                                  "block height to start reindexing from. Defaults to -1 (off).")
         parser.add_argument('--history_tx_cache_size', type=int,
-                            default=cls.integer('HISTORY_TX_CACHE_SIZE', 262144),
+                            default=cls.integer('HISTORY_TX_CACHE_SIZE', 524288),
                             help="Size of the lfu cache of txids in transaction histories for addresses. "
-                                 "Can be set in the env with 'TX_CACHE_SIZE'")
+                                 "Can be set in the env with 'HISTORY_TX_CACHE_SIZE'")
 
     @classmethod
     def from_arg_parser(cls, args):