diff --git a/srcpkgs/camlp4/update b/srcpkgs/camlp4/update
new file mode 100644
index 00000000000..f1ded80b702
--- /dev/null
+++ b/srcpkgs/camlp4/update
@@ -0,0 +1 @@
+pattern='"tag-name">\K[\d+.]+(?=<)'