diff --git a/CHANGELOG.md b/CHANGELOG.md
index 282ef7c..8b25bae 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,10 @@
 # CHANGELOG
 
+## 0.4.0 - 2020-06-30
+
+### Changed
+- Allow guzzle v7
+
 ## 0.3.0 - 2015-08-15
 
 * Updated to work with Guzzle 6 as a middleware.
diff --git a/composer.json b/composer.json
index 0d0ddbf..cc394db 100644
--- a/composer.json
+++ b/composer.json
@@ -13,7 +13,7 @@
     ],
     "require": {
         "php": ">=5.5.0",
-        "guzzlehttp/guzzle": "~6.0"
+        "guzzlehttp/guzzle": "^6.0|^7.0"
     },
     "require-dev": {
         "phpunit/phpunit": "~4.0"