diff --git a/src/package_io/input_parser.star b/src/package_io/input_parser.star
index 1f7a32145..ab904d456 100644
--- a/src/package_io/input_parser.star
+++ b/src/package_io/input_parser.star
@@ -338,12 +338,64 @@ def input_parser(plan, input_args):
         )
 
     if (
-        result["network_params"]["fulu_fork_epoch"] != constants.FAR_FUTURE_EPOCH
-        and result["network_params"]["bpo_1_epoch"]
+        result["network_params"]["bpo_1_epoch"]
         < result["network_params"]["fulu_fork_epoch"]
     ):
-        fail(
-            "Fulu fork must happen before BPO 1, please adjust the epochs accordingly."
+        result["network_params"]["bpo_1_epoch"] = result["network_params"][
+            "fulu_fork_epoch"
+        ]
+        plan.print(
+            "BPO 1 epoch adjusted to Fulu epoch {0}".format(
+                result["network_params"]["fulu_fork_epoch"]
+            )
+        )
+    if (
+        result["network_params"]["bpo_2_epoch"]
+        < result["network_params"]["bpo_1_epoch"]
+    ):
+        result["network_params"]["bpo_2_epoch"] = result["network_params"][
+            "bpo_1_epoch"
+        ]
+        plan.print(
+            "BPO 2 epoch adjusted to BPO 1 epoch {0}".format(
+                result["network_params"]["bpo_1_epoch"]
+            )
+        )
+    if (
+        result["network_params"]["bpo_3_epoch"]
+        < result["network_params"]["bpo_2_epoch"]
+    ):
+        result["network_params"]["bpo_3_epoch"] = result["network_params"][
+            "bpo_2_epoch"
+        ]
+        plan.print(
+            "BPO 3 epoch adjusted to BPO 2 epoch {0}".format(
+                result["network_params"]["bpo_2_epoch"]
+            )
+        )
+    if (
+        result["network_params"]["bpo_4_epoch"]
+        < result["network_params"]["bpo_3_epoch"]
+    ):
+        result["network_params"]["bpo_4_epoch"] = result["network_params"][
+            "bpo_3_epoch"
+        ]
+        plan.print(
+            "BPO 4 epoch adjusted to BPO 3 epoch {0}".format(
+                result["network_params"]["bpo_3_epoch"]
+            )
+        )
+    if (
+        result["network_params"]["bpo_5_epoch"]
+        < result["network_params"]["bpo_4_epoch"]
+    ):
+        result["network_params"]["bpo_5_epoch"] = result["network_params"][
+            "bpo_4_epoch"
+        ]
+        plan.print(
+            "BPO 5 epoch adjusted to BPO 4 epoch {0}".format(
+                result["network_params"]["bpo_4_epoch"]
+            )
         )
 
     if result["network_params"]["fulu_fork_epoch"] != constants.FAR_FUTURE_EPOCH: