diff --git a/infra/fast-time/override-60x.json b/infra/fast-time/override-60x.json
index f232111df..2069f5afc 100644
--- a/infra/fast-time/override-60x.json
+++ b/infra/fast-time/override-60x.json
@@ -54,6 +54,7 @@
   "difficulty_v2_activation_daa": 18446744073709551615,
   "proving_v0_activation_daa": 18446744073709551615,
   "finality_v3_activation_daa": 18446744073709551615,
+  "difficulty_v3_activation_daa": 18446744073709551615,
   "program_class_v3_activation_daa": 18446744073709551615,
   "program_class_v4_activation_daa": 18446744073709551615,
   "program_class_v4_signal_window_daa": 120,