diff --git a/lisp/net/trampver.el b/lisp/net/trampver.el
index 7badcd19f84..e4dc7168e4e 100644
--- a/lisp/net/trampver.el
+++ b/lisp/net/trampver.el
@@ -69,7 +69,7 @@
 	 ("2.2.3-24.1" . "24.1") ("2.2.3-24.1" . "24.2") ("2.2.6-24.3" . "24.3")
 	 ("2.2.9-24.4" . "24.4") ("2.2.11-24.5" . "24.5")
 	 ("2.2.13.25.1" . "25.1") ("2.2.13.25.2" . "25.2")
-	 ("2.2.13.25.2" . "25.3")
+	 ("2.2.13.25.2" . "25.3") ("2.3.3" . "26.1")
 	 ("2.3.3.26.1" . "26.1") ("2.3.5.26.2" . "26.2")))
 
 (add-hook 'tramp-unload-hook