diff --git a/ical.md b/ical.md
new file mode 100644
index 0000000..0a0e5ae
--- /dev/null
+++ b/ical.md
@@ -0,0 +1,3 @@
+https://github.com/wekan/wekan/issues/2836
+
+https://github.com/wekan/wekan-ical-server
\ No newline at end of file