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diff --git a/CHANGELOG b/CHANGELOG
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+++ b/CHANGELOG
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 CHANGELOG Roundcube Webmail
 ===========================
 
+- Fix possible collision in generated thumbnail cache key (#1489069)
 - Fix exit code on bootsrap errors in CLI mode (#1489044)
 - Fix error handling in CLI mode, use STDERR and non-empty exit code (#1489043)
 - Fix error when using check_referer=true