diff --git a/projects/json/project.yaml b/projects/json/project.yaml
index e5c6f8c3b..0d4a59850 100644
--- a/projects/json/project.yaml
+++ b/projects/json/project.yaml
@@ -1 +1,2 @@
 homepage: "https://github.com/nlohmann/json"
+primary_contact: "niels.lohmann@gmail.com"