diff --git a/paper.md b/paper.md
index 5c484dc..2bea40a 100644
--- a/paper.md
+++ b/paper.md
@@ -11,7 +11,7 @@ authors:
     orcid: 0000-0002-9521-5092
     affiliation: 1
   - name: Bernhard Ahrens
-    orcid: 0000-0000-0000-0000
+    orcid: 0000-0001-7226-6682
     affiliation: 2
 affiliations:
  - name: Environmental Science Division (EVS), Argonne National Laboratory, Lemont, IL, USA