diff --git a/CHANGELOG.md b/CHANGELOG.md
index be29d22..eed9c51 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## 2.1.1
+
+- “矿架与能源”商家的货表加入稀有电子元件（普通货，不加科技品溢价），上新时更容易买到，矿架第 4、5 槽升级和矿机修理要用。
+
 ## 2.1.0
 
 - Web3 商店的现货和商家货架改为每周一、周四早上上新（原来每 7 天一次）；镇压等原因错过的上新日在下一晚补上。
diff --git a/src/Decentralized.Domain/BmMerchants.cs b/src/Decentralized.Domain/BmMerchants.cs
index 3909c20..44182c2 100644
--- a/src/Decentralized.Domain/BmMerchants.cs
+++ b/src/Decentralized.Domain/BmMerchants.cs
@@ -24,7 +24,7 @@ namespace Decentralized.Domain
 
         public static readonly Dictionary<MerchantType, BmEntry[]> Table = new Dictionary<MerchantType, BmEntry[]>
         {
-            [MerchantType.Rigs] = new[] { T("pd_rig"), T("energy_credit_ext"), T("energy_credit_hyp"), T("energy_credit_breeder"), T("powerblock"), T("recharger"), T("current_converter") },
+            [MerchantType.Rigs] = new[] { T("pd_rig"), T("energy_credit_ext"), T("energy_credit_hyp"), T("energy_credit_breeder"), T("powerblock"), T("recharger"), T("current_converter"), G("rare_electronic") },
             [MerchantType.Modules] = new[] { T("system_module_overclock"), T("system_module_performance"), T("system_module_quality"), T("system_module_eco"), T("system_module_efficiancy"),
                 T("system_module_fineness"), T("system_module_streamlining"), T("module_extractor_advanced"), T("module_bay_expansion_kit") },
             [MerchantType.Arms] = new[] { C("handmade_pistol", 1), C("printed_gun", 1), C("stun_baton", 1), C("revolver", 2), C("heavy_handmade_pistol", 2), C("flashbang_grenade", 2), C("smoke_grenade", 2),
diff --git a/src/Decentralized/Core.cs b/src/Decentralized/Core.cs
index cc7bb26..904be89 100644
--- a/src/Decentralized/Core.cs
+++ b/src/Decentralized/Core.cs
@@ -7,7 +7,7 @@ namespace Decentralized
     {
         public const string Id = "probably_decentralized";
         public const string Name = "Probably Decentralized";
-        public const string Version = "2.1.0";
+        public const string Version = "2.1.1";
     }
 
     /// <summary>本地化：游戏的 mod 本地化表（ModFiles/Localization/*.csv），当前语言缺失时回退英文。</summary>
diff --git a/src/Decentralized/ModFiles/manifest.xml b/src/Decentralized/ModFiles/manifest.xml
index 17bdb2e..2727af8 100644
--- a/src/Decentralized/ModFiles/manifest.xml
+++ b/src/Decentralized/ModFiles/manifest.xml
@@ -3,7 +3,7 @@
   <ID>probably_decentralized</ID>
   <Name>Probably Decentralized</Name>
   <Author>edward</Author>
-  <ModVersion>2.1.0</ModVersion>
+  <ModVersion>2.1.1</ModVersion>
   <Description>Mine PSC with graphics cards, trade it on a fictional exchange, and cash it out past the compliance desk. Work in progress. All coins, exchanges and events are fictional and have no real-world value.</Description>
   <GameVersions>
     <Version>0.46</Version>
diff --git a/tests/Decentralized.Domain.Tests/Program.cs b/tests/Decentralized.Domain.Tests/Program.cs
index 3447f49..c56d5dc 100644
--- a/tests/Decentralized.Domain.Tests/Program.cs
+++ b/tests/Decentralized.Domain.Tests/Program.cs
@@ -2052,6 +2052,7 @@ internal static class Program
                 Check(acc.Length >= 2 && acc.Distinct().Count() == acc.Length && acc.All(a => a == Assets.PSC || a == Assets.CRT || a == Assets.CRA || a == Assets.Ponero), $"{ty} 收 {string.Join("/", acc)}");
             }
             Check(Merchants.Accepts(MerchantType.Arms).Contains(Assets.Ponero) && !Merchants.Accepts(MerchantType.Rigs).Contains(Assets.Ponero), "违禁类收隐私币，硬件类不收");
+            Check(Merchants.Table[MerchantType.Rigs].Any(e => e.Id == "rare_electronic" && e.Kind == GoodKind.Goods), "矿架与能源商家卖稀有电子元件（升级矿架槽要用），按普通货计价");
             Check(Merchants.PlatformAccepts.Contains(Assets.CRT) && Tuning.BmAutoSwapSlip > Tuning.DexFee * 10, "自动换币的滑点远高于 DEX 手续费");
         });