diff --git a/paper/paper.md b/paper/paper.md
index ced3202..fd7d765 100644
--- a/paper/paper.md
+++ b/paper/paper.md
@@ -21,7 +21,7 @@ authors:
     equal-contrib: false
     affiliation: 2
   - name: Fernando Pérez
-    orcid: 
+    orcid: 0000-0002-1725-9815
     equal-contrib: false
     affiliation: 1
 affiliations: