diff --git a/CHANGELOG.md b/CHANGELOG.md
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--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+### 4.0.0 - 2020/May/27
+
+* Support symfony/process ^4.4, and other symfony components ^5
+
 ### 2.1.0 - 2019/Sep/10
 
 * Added environment variables in aliases (#47)