diff --git a/CHANGELOG-3.4.md b/CHANGELOG-3.4.md
index cc532847e6..2d0e6ecdea 100644
--- a/CHANGELOG-3.4.md
+++ b/CHANGELOG-3.4.md
@@ -7,6 +7,16 @@ in 3.4 minor versions.
 To get the diff for a specific change, go to https://github.com/symfony/symfony/commit/XXX where XXX is the change hash
 To get the diff between two versions, go to https://github.com/symfony/symfony/compare/v3.4.0...v3.4.1
 
+* 3.4.26 (2019-04-17)
+
+ * bug #31084 [HttpFoundation] Make MimeTypeExtensionGuesser case insensitive (vermeirentony)
+ * bug #31142 Revert "bug #30423 [Security] Rework firewall's access denied rule (dimabory)" (chalasr)
+ * security #cve-2019-10910 [DI] Check service IDs are valid (nicolas-grekas)
+ * security #cve-2019-10909 [FrameworkBundle][Form] Fix XSS issues in the form theme of the PHP templating engine (stof)
+ * security #cve-2019-10912 [Cache][PHPUnit Bridge] Prevent destructors with side-effects from being unserialized (nicolas-grekas)
+ * security #cve-2019-10911 [Security] Add a separator in the remember me cookie hash (pborreli)
+ * security #cve-2019-10913 [HttpFoundation] reject invalid method override (nicolas-grekas)
+
 * 3.4.25 (2019-04-16)
 
  * bug #29944 [DI] Overriding services autowired by name under _defaults bind not working (przemyslaw-bogusz, renanbr)