diff --git a/.github/workflows/benchmark.yml b/.github/workflows/benchmark.yml
index 9d8cda2fdd1..b4ad2306a52 100644
--- a/.github/workflows/benchmark.yml
+++ b/.github/workflows/benchmark.yml
@@ -9,7 +9,7 @@ on:
 permissions: read-all
 
 env:
-  DEFAULT_GO_VERSION: "~1.25.0"
+  DEFAULT_GO_VERSION: "~1.26.0"
 jobs:
   benchmark:
     permissions:
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 4cdc3cac86e..f931a6e75e4 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -12,7 +12,7 @@ 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: "~1.25.0"
+  DEFAULT_GO_VERSION: "~1.26.0"
 # Declare default permissions as read only.
 permissions: read-all
 jobs:
@@ -135,7 +135,7 @@ jobs:
   compatibility-test:
     strategy:
       matrix:
-        go-version: ["1.25.0", "1.24.0"]
+        go-version: ["1.26.0", "1.25.0", "1.24.0"]
         platform:
           - os: ubuntu-latest
             arch: "386"
diff --git a/CHANGELOG.md b/CHANGELOG.md
index e725282bec2..2943d778ec8 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 1.24].
+The next release will require at least [Go 1.25].
+
+### Added
+
+- Support testing of [Go 1.26]. (#7902)
+
 <!-- Released section -->
 <!-- Don't change this section unless doing release -->
 
@@ -3635,6 +3642,7 @@ It contains api and sdk for trace and meter.
 
 <!-- Released section ended -->
 
+[Go 1.26]: https://go.dev/doc/go1.26
 [Go 1.25]: https://go.dev/doc/go1.25
 [Go 1.24]: https://go.dev/doc/go1.24
 [Go 1.23]: https://go.dev/doc/go1.23
diff --git a/README.md b/README.md
index c6335954311..6b1e170c4be 100644
--- a/README.md
+++ b/README.md
@@ -53,18 +53,25 @@ Currently, this project supports the following environments.
 
 | OS       | Go Version | Architecture |
 |----------|------------|--------------|
+| Ubuntu   | 1.26       | amd64        |
 | Ubuntu   | 1.25       | amd64        |
 | Ubuntu   | 1.24       | amd64        |
+| Ubuntu   | 1.26       | 386          |
 | Ubuntu   | 1.25       | 386          |
 | Ubuntu   | 1.24       | 386          |
+| Ubuntu   | 1.26       | arm64        |
 | Ubuntu   | 1.25       | arm64        |
 | Ubuntu   | 1.24       | arm64        |
+| macOS    | 1.26       | amd64        |
 | macOS    | 1.25       | amd64        |
 | macOS    | 1.24       | amd64        |
+| macOS    | 1.26       | arm64        |
 | macOS    | 1.25       | arm64        |
 | macOS    | 1.24       | arm64        |
+| Windows  | 1.26       | amd64        |
 | Windows  | 1.25       | amd64        |
 | Windows  | 1.24       | amd64        |
+| Windows  | 1.26       | 386          |
 | Windows  | 1.25       | 386          |
 | Windows  | 1.24       | 386          |