diff --git a/calendars/poliastro.yaml b/calendars/poliastro.yaml
index 3003d641..62c79128 100644
--- a/calendars/poliastro.yaml
+++ b/calendars/poliastro.yaml
@@ -1,13 +1,13 @@
 name: poliastro Community Calendar
 events:
-  - summary: Weekly poliastro community call
+  - summary: Monthly poliastro community call
     description: |
-      The weekly call for the poliastro community.
+      The monthly call for the poliastro community.
       Meeting notes: https://hackmd.io/@juanlu/r1WFmgXSu/edit
-    begin: 2022-07-20 11:00:00 +00:00
-    end: 2022-07-20 12:00:00 +00:00
+    begin: 2022-08-03 11:00:00 +00:00
+    end: 2022-08-03 12:00:00 +00:00
     url: https://meet.jit.si/poliastro
     repeat:
       interval:
-        days: 7
+        days: 28
       until: 2025-01-01 00:00:00 +00:00