diff --git a/.tool-versions b/.tool-versions
index 67aa133..f4c9892 100644
--- a/.tool-versions
+++ b/.tool-versions
@@ -1 +1,2 @@
-gleam 0.11.2
+gleam 0.14.0
+erlang 23.2
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6ccd366..8f6fa18 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,13 @@ adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## Unreleased
 
+## v1.6.0 - 2021-02-25
+
+### Changed
+
+- Gleam version to 0.14.0 and `gleam_stdlib` version to 0.14.0.
+- Relaxed `gleam_stdlib` version constraints in `rebar.config`.
+
 ## v1.5.1 - 2020-09-07
 
 ### Fixed
@@ -40,8 +47,7 @@ adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ### Added
 
-- An `ok_error_tuple` decoder for decoding `ok`/`error` tuples, (e.g. `{ok,
-  Success}`/`{error, Failure}`).
+- An `ok_error_tuple` decoder for decoding `ok`/`error` tuples, (e.g. `{ok, Success}`/`{error, Failure}`).
 
 ## v1.1.0 - 2019-12-28
 
diff --git a/README.md b/README.md
index 6cbc845..bac00b7 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,5 @@
 # decode
+
 [![Hex.pm](https://img.shields.io/hexpm/v/gleam_decode)](https://hex.pm/packages/gleam_decode) [![HexDocs.pm](https://img.shields.io/badge/hex-docs-ff69b4)](https://hexdocs.pm/gleam_decode/)
 
 A Gleam library for transforming Erlang or Elixir data into Gleam data.
@@ -117,25 +118,22 @@ pub fn erl_create_user() -> Result(User, String) {
 }
 ```
 
-
 ## Installation
 
 Add `gleam_decode` to the deps section of your `rebar.config` file.
 
 ```erlang
 {deps, [
-    {gleam_decode, "1.5.1"}
+    {gleam_decode, "1.6.0"}
 ]}.
 ```
 
-
 ## Need help?
 
 If you are having trouble understanding how to use this library, or find
 yourself dealing with a decoding problem that you don't believe is solvable with
 the current API, please open an issue!
 
-
 ## Credit
 
 Most of this library is based on the Elm language's JSON decoding library
diff --git a/src/gleam_decode.app.src b/src/gleam_decode.app.src
index bfe2fa4..31f189b 100644
--- a/src/gleam_decode.app.src
+++ b/src/gleam_decode.app.src
@@ -1,6 +1,6 @@
 {application,gleam_decode,
              [{description,"Transform Erlang or Elixir data into Gleam data"},
-              {vsn,"1.5.1"},
+              {vsn,"1.6.0"},
               {registered,[]},
               {applications,[kernel,stdlib]},
               {env,[]},