diff --git a/.github/workflows/benchmark.yml b/.github/workflows/benchmark.yml
index f2da11a68c4..c392312ada0 100644
--- a/.github/workflows/benchmark.yml
+++ b/.github/workflows/benchmark.yml
@@ -6,7 +6,7 @@ on:
   workflow_dispatch: 
 
 env:
-  DEFAULT_GO_VERSION: "~1.21.3"
+  DEFAULT_GO_VERSION: "~1.22.0"
 jobs:
   benchmark:
     name: Benchmarks
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 35cf86fc13a..5956fa7bb33 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -14,7 +14,7 @@ env:
   # backwards compatibility with the previous two minor releases and we
   # explicitly test our code for these versions so keeping this at prior
   # versions does not add value.
-  DEFAULT_GO_VERSION: "~1.21.3"
+  DEFAULT_GO_VERSION: "~1.22.0"
 jobs:
   lint:
     runs-on: ubuntu-latest
@@ -106,7 +106,7 @@ jobs:
   compatibility-test:
     strategy:
       matrix:
-        go-version: ["~1.21.3", "~1.20.10"]
+        go-version: ["~1.22.0", "~1.21.3", "~1.20.10"]
         os: [ubuntu-latest, macos-latest, windows-latest]
         # GitHub Actions does not support arm* architectures on default
         # runners. It is possible to accomplish this with a self-hosted runner
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5422ca7dccd..e9f9aa5ed94 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,13 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
 
 ## [Unreleased]
 
+This release is the last to support [Go 1.20].
+The next release will require at least [Go 1.21].
+
+### Added
+
+- Support [Go 1.22]. (#4890)
+
 ## [1.23.1] 2024-02-07
 
 ### Fixed
@@ -2907,6 +2914,8 @@ It contains api and sdk for trace and meter.
 [0.1.1]: https://github.com/open-telemetry/opentelemetry-go/releases/tag/v0.1.1
 [0.1.0]: https://github.com/open-telemetry/opentelemetry-go/releases/tag/v0.1.0
 
+[Go 1.22]: https://go.dev/doc/go1.22
+[Go 1.21]: https://go.dev/doc/go1.21
 [Go 1.20]: https://go.dev/doc/go1.20
 [Go 1.19]: https://go.dev/doc/go1.19
 [Go 1.18]: https://go.dev/doc/go1.18
diff --git a/README.md b/README.md
index 44e1bfc9b5e..0682805867e 100644
--- a/README.md
+++ b/README.md
@@ -50,14 +50,19 @@ Currently, this project supports the following environments.
 
 | OS      | Go Version | Architecture |
 |---------|------------|--------------|
+| Ubuntu  | 1.22       | amd64        |
 | Ubuntu  | 1.21       | amd64        |
 | Ubuntu  | 1.20       | amd64        |
+| Ubuntu  | 1.22       | 386          |
 | Ubuntu  | 1.21       | 386          |
 | Ubuntu  | 1.20       | 386          |
+| MacOS   | 1.22       | amd64        |
 | MacOS   | 1.21       | amd64        |
 | MacOS   | 1.20       | amd64        |
+| Windows | 1.22       | amd64        |
 | Windows | 1.21       | amd64        |
 | Windows | 1.20       | amd64        |
+| Windows | 1.22       | 386          |
 | Windows | 1.21       | 386          |
 | Windows | 1.20       | 386          |