diff --git a/README.md b/README.md
index 43431c4..075d0e3 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@
 
 A simple HTTP server inspired by Express and in tune with Functional Programming principles in JavaScript for Deno.  
 
-[![deno land](http://img.shields.io/badge/available%20on-deno.land/x-lightgrey.svg?logo=deno&labelColor=black)](https://github.com/sebastienfilion/functional-http-server@v0.1.1)
+[![deno land](http://img.shields.io/badge/available%20on-deno.land/x-lightgrey.svg?logo=deno&labelColor=black)](https://github.com/sebastienfilion/functional-http-server@v0.3.0)
 [![deno version](https://img.shields.io/badge/deno-^1.4.6-lightgrey?logo=deno)](https://github.com/denoland/deno)
 [![GitHub release](https://img.shields.io/github/v/release/sebastienfilion/functional)](https://github.com/sebastienfilion/functional-http-server/releases)
 [![GitHub licence](https://img.shields.io/github/license/sebastienfilion/functional)](https://github.com/sebastienfilion/functional-http-server/blob/v0.1.1/LICENSE)
@@ -17,9 +17,9 @@ The function takes two arguments; the first argument is the options, and the sec
 function that takes a `Request` and return a `Task` of a `Response`.
 
 ```js
-import Task from "https://deno.land/x/functional@v1.1.0/library/Task.js";
-import Response from "https://deno.land/x/functional_io@v0.5.0/library/Response.js";
-import startHTTPServer from "https://deno.land/x/functional_http_server@v0.1.0/library/server.js";
+import Task from "https://deno.land/x/functional@v1.2.1/library/Task.js";
+import Response from "https://deno.land/x/functional_io@v1.0.0/library/Response.js";
+import startHTTPServer from "https://deno.land/x/functional_http_server@v0.3.0/library/server.js";
 
 startHTTPServer({ port: 8080 }, request => Task.of(Response.OK({}, request.raw)));
 ```
@@ -44,10 +44,10 @@ The assertion function takes a `Request` and return a `Boolean`, the handling fu
 must return a `Task` of a `Response`.
 
 ```js
-import Task from "https://deno.land/x/functional@v1.1.0/library/Task.js";
-import { encodeText } from "https://deno.land/x/functional@v1.1.0/library/utilities.js";
-import Response from "https://deno.land/x/functional_io@v0.5.0/library/Response.js";
-import { route } from "https://deno.land/x/functional_http_server@v0.1.0/library/route.js";
+import Task from "https://deno.land/x/functional@v1.2.1/library/Task.js";
+import { encodeText } from "https://deno.land/x/functional@v1.2.1/library/utilities.js";
+import Response from "https://deno.land/x/functional_io@v1.0.0/library/Response.js";
+import { route } from "https://deno.land/x/functional_http_server@v0.3.0/library/route.js";
 
 startHTTPServer(
   { port: 8080 },
@@ -66,10 +66,10 @@ Because the pattern is common, this library also offers a collection of handler
 the assertion function. Each handler takes a `String` or a `RegExp` and a unary function.
 
 ```js
-import Task from "https://deno.land/x/functional@v1.1.0/library/Task.js";
-import { encodeText } from "https://deno.land/x/functional@v1.1.0/library/utilities.js";
-import Response from "https://deno.land/x/functional_io@v0.5.0/library/Response.js";
-import { handlers, route } from "https://deno.land/x/functional_http_server@v0.1.0/library/route.js";
+import Task from "https://deno.land/x/functional@v1.2.1/library/Task.js";
+import { encodeText } from "https://deno.land/x/functional@v1.2.1/library/utilities.js";
+import Response from "https://deno.land/x/functional_io@v1.0.0/library/Response.js";
+import { handlers, route } from "https://deno.land/x/functional_http_server@v0.3.0/library/route.js";
 
 startHTTPServer(
   { port: 8080 },
@@ -88,7 +88,7 @@ The binary function handler will be called with an object containing the origina
 and other parameters; the second argument is the body of request serialized based on the content type.
 
 ```js
-import { explodeRequest } from "https://deno.land/x/functional_http_server@v0.1.0/library/utilities.js";
+import { explodeRequest } from "https://deno.land/x/functional_http_server@v0.3.0/library/utilities.js";
 
 startHTTPServer(
   { port: 8080 },
diff --git a/library/route.js b/library/route.js
index 56a2432..d870855 100644
--- a/library/route.js
+++ b/library/route.js
@@ -11,11 +11,11 @@ import {
   prop,
   test
 } from "https://x.nest.land/ramda@0.27.0/source/index.js";
-import Task from "https://deno.land/x/functional@v1.1.0/library/Task.js";
-import Request from "https://deno.land/x/functional_io@v0.5.0/library/Request.js";
-import Response from "https://deno.land/x/functional_io@v0.5.0/library/Response.js";
+import Task from "https://deno.land/x/functional@v1.2.1/library/Task.js";
+import Request from "https://deno.land/x/functional_io@v1.0.0/library/Request.js";
+import Response from "https://deno.land/x/functional_io@v1.0.0/library/Response.js";
 
-import { assertIsRegex } from "https://deno.land/x/functional@v1.1.0/library/utilities.js";
+import { assertIsRegex } from "https://deno.land/x/functional@v1.2.1/library/utilities.js";
 
 /**
  * ## Routing
@@ -27,8 +27,8 @@ import { assertIsRegex } from "https://deno.land/x/functional@v1.1.0/library/uti
  * must return a `Task` of a `Response`.
  *
  * ```js
- * import Task from "https://deno.land/x/functional@v1.1.0/library/Task.js";
- * import Response from "https://deno.land/x/functional_io@v0.5.0/library/Response.js";
+ * import Task from "https://deno.land/x/functional@v1.2.1/library/Task.js";
+ * import Response from "https://deno.land/x/functional_io@v1.0.0/library/Response.js";
  * import { route } from "./library/route.js";
  * import { encodeText } from "./library/utilities.js";
  *
@@ -49,8 +49,8 @@ import { assertIsRegex } from "https://deno.land/x/functional@v1.1.0/library/uti
  * the assertion function. Each handler takes a `String` or a `RegExp` and a unary function.
  *
  * ```js
- * import Task from "https://deno.land/x/functional@v1.1.0/library/Task.js";
- * import Response from "https://deno.land/x/functional_io@v0.5.0/library/Response.js";
+ * import Task from "https://deno.land/x/functional@v1.2.1/library/Task.js";
+ * import Response from "https://deno.land/x/functional_io@v1.0.0/library/Response.js";
  * import { handlers, route } from "./library/route.js";
  * import { encodeText } from "./library/utilities.js";
  *
diff --git a/library/route_test.js b/library/route_test.js
index befdc95..ab70dbd 100644
--- a/library/route_test.js
+++ b/library/route_test.js
@@ -1,7 +1,7 @@
-import { assert, assertEquals } from "https://deno.land/std@0.70.0/testing/asserts.ts"
-import Task from "https://deno.land/x/functional@v1.1.0/library/Task.js";
-import Request from "https://deno.land/x/functional_io@v0.5.0/library/Request.js";
-import Response from "https://deno.land/x/functional_io@v0.5.0/library/Response.js";
+import { assert, assertEquals } from "https://deno.land/std@0.79.0/testing/asserts.ts"
+import Task from "https://deno.land/x/functional@v1.2.1/library/Task.js";
+import Request from "https://deno.land/x/functional_io@v1.0.0/library/Request.js";
+import Response from "https://deno.land/x/functional_io@v1.0.0/library/Response.js";
 
 import { handlers, route } from "./route.js";
 
diff --git a/library/server.js b/library/server.js
index 1349e11..90b7747 100644
--- a/library/server.js
+++ b/library/server.js
@@ -1,9 +1,9 @@
-import { gray, red } from "https://deno.land/std@0.76.0/fmt/colors.ts";
-import { serve, serveTLS } from "https://deno.land/std@0.74.0/http/server.ts";
+import { gray, red } from "https://deno.land/std@0.79.0/fmt/colors.ts";
+import { serve, serveTLS } from "https://deno.land/std@0.79.0/http/server.ts";
 import { cond, curry, reduce } from "https://x.nest.land/ramda@0.27.0/source/index.js";
-import { encodeText } from "https://deno.land/x/functional@v1.1.0/library/utilities.js";
-import Request from "https://deno.land/x/functional_io@v0.5.0/library/Request.js";
-import Response from "https://deno.land/x/functional_io@v0.5.0/library/Response.js";
+import { encodeText } from "https://deno.land/x/functional@v1.2.1/library/utilities.js";
+import Request from "https://deno.land/x/functional_io@v1.0.0/library/Request.js";
+import Response from "https://deno.land/x/functional_io@v1.0.0/library/Response.js";
 
 /**
  * ## Simple HTTP server
@@ -13,8 +13,8 @@ import Response from "https://deno.land/x/functional_io@v0.5.0/library/Response.
  * function that takes a `Request` and return a `Task` of a `Response`.
  *
  * ```js
- * import Task from "https://deno.land/x/functional@v1.1.0/library/Task.js";
- * import Response from "https://deno.land/x/functional_io@v0.5.0/library/Response.js";
+ * import Task from "https://deno.land/x/functional@v1.2.1/library/Task.js";
+ * import Response from "https://deno.land/x/functional_io@v1.0.0/library/Response.js";
  * import startHTTPServer from "./library/server.js";
  *
  * startHTTPServer({ port: 8080 }, request => Task.of(Response.OK({}, request.raw)));
diff --git a/library/server_test.js b/library/server_test.js
index 03370bc..0dfa12f 100644
--- a/library/server_test.js
+++ b/library/server_test.js
@@ -1,12 +1,12 @@
-import { assert, assertEquals } from "https://deno.land/std@0.70.0/testing/asserts.ts";
+import { assert, assertEquals } from "https://deno.land/std@0.79.0/testing/asserts.ts";
 import { compose, converge, mergeRight } from "https://x.nest.land/ramda@0.27.0/source/index.js";
 
-import Either from "https://deno.land/x/functional@v1.1.0/library/Either.js";
-import Task from "https://deno.land/x/functional@v1.1.0/library/Task.js";
-import { decodeRaw, encodeText, safeExtract } from "https://deno.land/x/functional@v1.1.0/library/utilities.js";
-import { fetch } from "https://deno.land/x/functional_io@v0.5.0/library/browser_safe.js";
-import Request from "https://deno.land/x/functional_io@v0.5.0/library/Request.js";
-import Response from "https://deno.land/x/functional_io@v0.5.0/library/Response.js";
+import Either from "https://deno.land/x/functional@v1.2.1/library/Either.js";
+import Task from "https://deno.land/x/functional@v1.2.1/library/Task.js";
+import { decodeRaw, encodeText, safeExtract } from "https://deno.land/x/functional@v1.2.1/library/utilities.js";
+import { fetch } from "https://deno.land/x/functional_io@v1.0.0/library/browser_safe.js";
+import Request from "https://deno.land/x/functional_io@v1.0.0/library/Request.js";
+import Response from "https://deno.land/x/functional_io@v1.0.0/library/Response.js";
 
 import { handlers, route } from "./route.js";
 import { startHTTPServer } from "./server.js";
diff --git a/library/utilities.js b/library/utilities.js
index e016125..a1dd23d 100644
--- a/library/utilities.js
+++ b/library/utilities.js
@@ -1,7 +1,6 @@
 import {
   always,
   ap,
-  chain,
   compose,
   cond,
   converge,
@@ -16,8 +15,7 @@ import {
   split,
   test
 } from "https://x.nest.land/ramda@0.27.0/source/index.js";
-import { assertIsRegex, decodeRaw, encodeText, log } from "https://deno.land/x/functional@v1.1.0/library/utilities.js";
-import Request from "https://deno.land/x/functional_io@v0.5.0/library/Request.js";
+import { assertIsRegex, decodeRaw } from "https://deno.land/x/functional@v1.2.1/library/utilities.js";
 
 /**
  * ### Parsing Requests
diff --git a/library/utilities_test.js b/library/utilities_test.js
index 744197b..44d0a27 100644
--- a/library/utilities_test.js
+++ b/library/utilities_test.js
@@ -1,10 +1,10 @@
-import { assert, assertEquals } from "https://deno.land/std@0.70.0/testing/asserts.ts"
+import { assert, assertEquals } from "https://deno.land/std@0.79.0/testing/asserts.ts"
 import { curry } from "https://x.nest.land/ramda@0.27.0/source/index.js";
 
-import Request from "https://deno.land/x/functional_io@v0.5.0/library/Request.js";
-import Response from "https://deno.land/x/functional_io@v0.5.0/library/Response.js";
-import Task from "https://deno.land/x/functional@v1.1.0/library/Task.js";
-import { decodeRaw, encodeText, safeExtract } from "https://deno.land/x/functional@v1.1.0/library/utilities.js";
+import Request from "https://deno.land/x/functional_io@v1.0.0/library/Request.js";
+import Response from "https://deno.land/x/functional_io@v1.0.0/library/Response.js";
+import Task from "https://deno.land/x/functional@v1.2.1/library/Task.js";
+import { decodeRaw, encodeText, safeExtract } from "https://deno.land/x/functional@v1.2.1/library/utilities.js";
 
 import {
   explodeRequest,