diff --git a/.github/workflows/macos-linux-conda.yml b/.github/workflows/macos-linux-conda.yml
index f714a402f4..dab1e635b4 100644
--- a/.github/workflows/macos-linux-conda.yml
+++ b/.github/workflows/macos-linux-conda.yml
@@ -2,7 +2,7 @@ name: CI - OSX/Linux via Conda
 
 on:
   schedule:
-    - cron: '*/30 * * * *'
+    - cron: '0 0 * * 1'
   push:
     paths-ignore:
       - doc/**
diff --git a/.github/workflows/windows-conda.yml b/.github/workflows/windows-conda.yml
index f17f03dff0..7ae92cb16a 100644
--- a/.github/workflows/windows-conda.yml
+++ b/.github/workflows/windows-conda.yml
@@ -1,7 +1,7 @@
 name: CI - Windows via Conda
 on:
   schedule:
-    - cron: '*/30 * * * *'
+    - cron: '0 0 * * 1'
   push:
     paths-ignore:
       - doc/**