diff --git a/types/parsimmon/index.d.ts b/types/parsimmon/index.d.ts
index dfbae05e23..26ed383daf 100644
--- a/types/parsimmon/index.d.ts
+++ b/types/parsimmon/index.d.ts
@@ -1,4 +1,4 @@
-// Type definitions for Parsimmon 1.3
+// Type definitions for Parsimmon 1.6
 // Project: https://github.com/jneen/parsimmon
 // Definitions by: Bart van der Schoor <https://github.com/Bartvds>
 //                 Mizunashi Mana <https://github.com/mizunashi-mana>
@@ -74,6 +74,14 @@ declare namespace Parsimmon {
 		index: Index;
 	}
 
+	interface Rule {
+		[key: string]: (r?: Language) => Parser<any>;
+	}
+
+	interface Language {
+		[key: string]: Parser<any>;
+	}
+
 	interface Parser<T> {
 		/**
 		 * parse the string
@@ -106,6 +114,15 @@ declare namespace Parsimmon {
 		 */
 		// tslint:disable-next-line:unified-signatures
 		then<U>(anotherParser: Parser<U>): Parser<U>;
+		/**
+		 * returns wrapper(this) from the parser. Useful for custom functions used
+		 * to wrap your parsers, while keeping with Parsimmon chaining style.
+		 */
+		thru<U>(call: (wrapper: Parser<U>) => Parser<T>): Parser<T>;
+		/**
+		 * expects anotherParser before and after parser, yielding the result of parser
+		 */
+		trim<U>(anotherParser: Parser<U>): Parser<T>;
 		/**
 		 * transforms the output of parser with the given function.
 		 */
@@ -171,6 +188,11 @@ declare namespace Parsimmon {
 	 */
 	function Parser<T>(fn: (input: string, i: number) => Parsimmon.Reply<T>): Parser<T>;
 
+	/**
+	 * Starting point for building a language parser in Parsimmon
+	 */
+	function createLanguage(rules: Rule): Language;
+
 	/**
 	 * To be used inside of Parsimmon(fn). Generates an object describing how
 	 * far the successful parse went (index), and what value it created doing