diff --git a/linq/linq.d.ts b/linq/linq.d.ts
index bea5bd464..fb03173ce 100644
--- a/linq/linq.d.ts
+++ b/linq/linq.d.ts
@@ -122,13 +122,25 @@ declare module linq {
         Average(selector?: string): number;
         Count(predicate?: ($) => boolean): number;
         Count(predicate?: string): number;
-        Max(selector?: ($) => number): number;
-        Max(selector?: string): number;
-        Min(selector?: ($) => number): number;
-        Min(selector?: string): number;
-        MaxBy(selector: ($) => number): any;
+        Max(selector?: ($: T) => any): any;
+        Max(selector?: ($: T) => Date): Date;
+        Max(selector?: ($: T) => number): number;
+        Max(selector: ($: T) => string): string;
+        Max(selector?: string): any;
+        Min(selector?: ($: T) => any): any;
+        Min(selector?: ($: T) => Date): Date;
+        Min(selector: ($: T) => string): string;
+        Min(selector?: ($: T) => number): number;
+        Min(selector?: string): any;
+        MaxBy(selector: ($: T) => any): any;
+        MaxBy(selector: ($: T) => string): string;
+        MaxBy(selector: ($: T) => Date): Date;
+        MaxBy(selector: ($: T) => number): number;
         MaxBy(selector: string): any;
-        MinBy(selector: ($) => number): any;
+        MinBy(selector: ($: T) => Date): Date;
+        MinBy(selector: ($: T) => number): any;
+        MinBy(selector: ($: T) => string): string;
+        MinBy(selector: ($: T) => any): any;
         MinBy(selector: string): any;
         Sum(selector?: ($) => number): number;
         Sum(selector?: string): number;