diff --git a/srcpkgs/thunderbird/update b/srcpkgs/thunderbird/update
index fa9baa450e1..840ff61786c 100644
--- a/srcpkgs/thunderbird/update
+++ b/srcpkgs/thunderbird/update
@@ -1,2 +1,2 @@
 site="https://www.thunderbird.net/en-US/thunderbird/releases/atom.xml"
-pattern="Thunderbird \K[0-9.]+"
+pattern="Thunderbird \K[0-9.]+(?=esr)"