...

compiler/NubLang/Tokenization/Tokenizer.cs

@@ -18,6 +18,7 @@ public sealed class Tokenizer
         ["let"] = Symbol.Let,
         ["calls"] = Symbol.Calls,
         ["for"] = Symbol.For,
+        ["in"] = Symbol.In,
         ["extern"] = Symbol.Extern,
         ["module"] = Symbol.Module,
         ["export"] = Symbol.Export,