diff --git a/.github/workflows/nightly.yml b/.github/workflows/nightly.yml
index a1003ac84afd..fff341aafb90 100644
--- a/.github/workflows/nightly.yml
+++ b/.github/workflows/nightly.yml
@@ -5,7 +5,7 @@ name: Run nightly package version and status checks
 
 on:
   schedule:
-    - cron: '0 2 * * *'
+    - cron: '0 2 * * 1,4'
   workflow_dispatch:
   pull_request:
     paths:
diff --git a/docs/workflows.md b/docs/workflows.md
index 699dd4bd0764..b598047c25fb 100644
--- a/docs/workflows.md
+++ b/docs/workflows.md
@@ -285,7 +285,7 @@ and the site deploy succeeds.
 
 ## 4. Nightly upgrades and maintenance
 
-`nightly.yml` runs on a schedule, by manual dispatch, and for PRs that modify
+`nightly.yml` runs on a schedule (Mondays and Thursdays at 02:00 UTC), by manual dispatch, and for PRs that modify
 its version-checking logic. Its `check_versions` job reads the tracked package
 set from `ci_scripts/packages.txt` and compares package YAML/release state with
 PyPI.