diff --git a/.upptimerc.yml b/.upptimerc.yml
index ef5134d4a6..6ebc4b8f37 100644
--- a/.upptimerc.yml
+++ b/.upptimerc.yml
@@ -39,6 +39,8 @@ sites:
     url: https://etymologiebank.ivdnt.org
   - name: ewnd.ivdnt.org
     url: https://ewnd.ivdnt.org
+  - name: gekaaptebrieven.ivdnt.org
+    url: https://gekaaptebrieven.ivdnt.org
   - name: gtb.ivdnt.org
     url: https://gtb.ivdnt.org
   - name: jwsii.ivdnt.org