diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index bcd8cd0..15c553b 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -37,7 +37,7 @@ jobs:
     strategy:
       max-parallel: 10
       matrix:
-        php: ['7.2', '7.3', '7.4', '8.0', '8.1', '8.2']
+        php: ['7.2', '7.3', '7.4', '8.0', '8.1', '8.2', '8.3']
 
     steps:
       - name: Set up PHP
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 065a2c8..7fcbb70 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,12 @@
 # CHANGELOG
 
 
+## UPCOMING
+
+### Changed
+
+- PHP 8.3 support
+
 ## 2.0.0 - 2023-05-21
 
 ### Added
diff --git a/README.md b/README.md
index 4dc7b6a..a32d3d2 100644
--- a/README.md
+++ b/README.md
@@ -41,7 +41,7 @@ composer require guzzlehttp/promises
 | Version | Status                 | PHP Version  |
 |---------|------------------------|--------------|
 | 1.x     | Bug and security fixes | >=5.5,<8.3   |
-| 2.x     | Latest                 | >=7.2.5,<8.3 |
+| 2.x     | Latest                 | >=7.2.5,<8.4 |
 
 
 ## Quick Start