diff --git a/chia/consensus/default_constants.py b/chia/consensus/default_constants.py
index 7d2b93fe5ad4..b2dc67a883a5 100644
--- a/chia/consensus/default_constants.py
+++ b/chia/consensus/default_constants.py
@@ -111,3 +111,6 @@ def update_testnet_overrides(network_id: str, overrides: dict[str, Any]) -> None
     if network_id in {"testnet11", "testneta"}:
         if "MIN_PLOT_SIZE_V2" not in overrides:
             overrides["MIN_PLOT_SIZE_V2"] = 18
+    if network_id == "testneta":
+        if "HARD_FORK_HEIGHT" not in overrides:
+            overrides["HARD_FORK_HEIGHT"] = 3693395
diff --git a/chia/util/initial-config.yaml b/chia/util/initial-config.yaml
index cee28b0ae2ca..cccce94a5b06 100644
--- a/chia/util/initial-config.yaml
+++ b/chia/util/initial-config.yaml
@@ -55,6 +55,7 @@ network_overrides: &network_overrides
       MIN_PLOT_SIZE_V2: 20
       NETWORK_TYPE: 1
       SUB_SLOT_ITERS_STARTING: 67108864
+      HARD_FORK_HEIGHT: 3693395
   config:
     mainnet:
       address_prefix: "xch"