diff --git a/README.md b/README.md
index 9a4f033a1..7683b9b7f 100644
--- a/README.md
+++ b/README.md
@@ -568,7 +568,7 @@ network_params:
   max_request_blob_sidecars_electra: 1152
 
   # The number of validator keys that each CL validator node should get
-  num_validator_keys_per_node: 64
+  num_validator_keys_per_node: 128
 
   # This mnemonic will a) be used to create keystores for all the types of validators that we have and b) be used to generate a CL genesis.ssz that has the children
   # validator keys already preregistered as validators
diff --git a/network_params.yaml b/network_params.yaml
index c4ca36734..f64f1cf13 100644
--- a/network_params.yaml
+++ b/network_params.yaml
@@ -75,7 +75,7 @@ network_params:
   deposit_contract_address: "0x00000000219ab540356cBB839Cbe05303d7705Fa"
   seconds_per_slot: 12
   slot_duration_ms: 12000
-  num_validator_keys_per_node: 64
+  num_validator_keys_per_node: 128
   preregistered_validator_keys_mnemonic:
     "giant issue aisle success illegal bike spike
     question tent bar rely arctic volcano long crawl hungry vocal artwork sniff fantasy
diff --git a/src/package_io/input_parser.star b/src/package_io/input_parser.star
index 189f2a4cd..9f5bbfd0a 100644
--- a/src/package_io/input_parser.star
+++ b/src/package_io/input_parser.star
@@ -62,9 +62,6 @@ DEFAULT_REMOTE_SIGNER_IMAGES = {
 # MEV Params
 MEV_BOOST_PORT = 18550
 
-# Minimum number of validators required for a network to be valid is 64
-MIN_VALIDATORS = 64
-
 DEFAULT_ADDITIONAL_SERVICES = []
 
 ATTR_TO_BE_SKIPPED_AT_ROOT = (
@@ -314,12 +311,14 @@ def input_parser(plan, input_args):
 
     if result["network_params"]["fulu_fork_epoch"] != constants.FAR_FUTURE_EPOCH:
         has_supernodes = False
+        has_node_with_128_plus_validators = False
         num_perfect_peerdas_participants = 0
         for participant in result["participants"]:
             num_perfect_peerdas_participants += 1
             if participant.get("supernode", False):
                 has_supernodes = True
-                break
+            if participant.get("validator_count", 0) >= 128:
+                has_node_with_128_plus_validators = True
 
         if result["network_params"]["perfect_peerdas_enabled"]:
             if num_perfect_peerdas_participants < 16:
@@ -331,10 +330,11 @@ def input_parser(plan, input_args):
 
         if (
             not has_supernodes
+            and not has_node_with_128_plus_validators
             and not result["network_params"]["perfect_peerdas_enabled"]
         ):
             fail(
-                "Fulu fork is enabled (epoch: {0}) but no supernodes are configured in the participant list and perfect_peerdas_enabled is not enabled. Either configure supernodes for some participants or enable perfect_peerdas_enabled in network_params and have 16 participants.".format(
+                "Fulu fork is enabled (epoch: {0}) but no supernodes are configured, no nodes have 128 or more validators, and perfect_peerdas_enabled is not enabled. Either configure a supernode, ensure at least one node has 128+ validators, or enable perfect_peerdas_enabled in network_params with 16 participants.".format(
                     str(result["network_params"]["fulu_fork_epoch"])
                 )
             )
@@ -1074,17 +1074,9 @@ def parse_network_params(plan, input_args):
             )
 
     if (
-        result["network_params"]["network"] == constants.NETWORK_NAME.kurtosis
-        or constants.NETWORK_NAME.shadowfork in result["network_params"]["network"]
+        result["network_params"]["network"] != constants.NETWORK_NAME.kurtosis
+        and constants.NETWORK_NAME.shadowfork not in result["network_params"]["network"]
     ):
-        if MIN_VALIDATORS > actual_num_validators:
-            fail(
-                "We require at least {0} validators but got {1}".format(
-                    MIN_VALIDATORS, actual_num_validators
-                )
-            )
-    else:
-        # Don't allow validators on non-kurtosis networks
         for participant in result["participants"]:
             participant["validator_count"] = 0
 
@@ -1183,7 +1175,7 @@ def default_network_params():
         "deposit_contract_address": "0x00000000219ab540356cBB839Cbe05303d7705Fa",
         "seconds_per_slot": 12,
         "slot_duration_ms": 12000,
-        "num_validator_keys_per_node": 64,
+        "num_validator_keys_per_node": 128,
         "preregistered_validator_keys_mnemonic": constants.DEFAULT_MNEMONIC,
         "preregistered_validator_count": 0,
         "genesis_delay": 20,
@@ -1265,7 +1257,7 @@ def default_minimal_network_params():
         "deposit_contract_address": "0x00000000219ab540356cBB839Cbe05303d7705Fa",
         "seconds_per_slot": 6,
         "slot_duration_ms": 6000,
-        "num_validator_keys_per_node": 64,
+        "num_validator_keys_per_node": 128,
         "preregistered_validator_keys_mnemonic": constants.DEFAULT_MNEMONIC,
         "preregistered_validator_count": 0,
         "genesis_delay": 20,