diff --git a/CHANGELOG.md b/CHANGELOG.md
index 18af3da..485e91a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # CHANGELOG
 
+## 2.6.18 (2 September 2024)
+
+* Fixes a bug in which projects reopening the main namespace of a gem dependency
+  managed by its own Zeitwerk loader could not reload the constants they added
+  to that external namespace.
+
 ## 2.6.17 (29 July 2024)
 
 * Fix log message when eager loading a directory ends.
diff --git a/lib/zeitwerk/version.rb b/lib/zeitwerk/version.rb
index e725d2f..9eef6c9 100644
--- a/lib/zeitwerk/version.rb
+++ b/lib/zeitwerk/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module Zeitwerk
-  VERSION = "2.6.17"
+  VERSION = "2.6.18"
 end