diff --git a/forge-gui/res/formats/Sanctioned/Pioneer.txt b/forge-gui/res/formats/Sanctioned/Pioneer.txt
index 38d2596a1f1..52d9762ff70 100644
--- a/forge-gui/res/formats/Sanctioned/Pioneer.txt
+++ b/forge-gui/res/formats/Sanctioned/Pioneer.txt
@@ -3,5 +3,5 @@ Name:Pioneer
 Order:102
 Subtype:Pioneer
 Type:Sanctioned
-Sets:RTR, GTC, DGM, M14, THS, BNG, JOU, M15, KTK, FRF, DTK, ORI, BFZ, OGW, SOI, EMN, KLD, AER, AKH, HOU, XLN, RIX, DOM, M19, GRN, RNA, WAR, M20, ELD, THB, IKO, M21, ZNR, KHM
+Sets:RTR, GTC, DGM, M14, THS, BNG, JOU, M15, KTK, FRF, DTK, ORI, BFZ, OGW, SOI, EMN, KLD, AER, AKH, HOU, XLN, RIX, DOM, M19, GRN, RNA, WAR, M20, ELD, THB, IKO, M21, ZNR, KHM, STX
 Banned:Balustrade Spy; Bloodstained Mire; Felidar Guardian; Field of the Dead; Flooded Strand; Inverter of Truth; Kethis, the Hidden Hand; Leyline of Abundance; Nexus of Fate; Oko, Thief of Crowns; Once Upon a Time; Polluted Delta; Smuggler's Copter; Teferi, Time Raveler; Undercity Informer; Underworld Breach; Uro, Titan of Nature's Wrath; Veil of Summer; Walking Ballista; Wilderness Reclamation; Windswept Heath; Wooded Foothills