diff --git a/pibuss/lilac.yaml b/pibuss/lilac.yaml
index 82770c4585..ff1d56eacb 100644
--- a/pibuss/lilac.yaml
+++ b/pibuss/lilac.yaml
@@ -5,4 +5,4 @@ maintainers:
 update_on:
   - source: regex
     url: https://rega.kuleuven.be/cev/ecv/software/pibuss
-    regex: pibuss_v(/d+./d+).jar
+    regex: pibuss_v(\d+.\d+).jar