diff --git a/migration.yml b/migration.yml
index 6562adf..a8e45f5 100644
--- a/migration.yml
+++ b/migration.yml
@@ -157,16 +157,19 @@ datasets:
 
   japan_population_by_age.csv:
     pilot: P5
-    status: landed
+    status: repointed
     # Migrated out of lecture-python-intro, which held an e-Stat export with no
     # recorded provenance. Rebuilt from the same table at its publisher, the
-    # Statistics Bureau, whose copy has a stable URL; the figures are identical.
-    # Flip to `repointed` when the lecture PR merges.
+    # Statistics Bureau, whose copy has a stable URL; the figures are identical,
+    # so the repoint left lecture output unchanged.
     prior_pattern: local-path
     landed:
       pr: QuantEcon/data-lectures#33
       date: 2026-08-04
-    repoints: []
+    repoints:
+      - repo: QuantEcon/lecture-python-intro
+        pr: QuantEcon/lecture-python-intro#821
+        date: 2026-08-04
     cutover: null
 
 # Planned waves that have not landed anything here yet. `datasets` names the
diff --git a/scripts/audit_annotations.yml b/scripts/audit_annotations.yml
index f682c01..d436831 100644
--- a/scripts/audit_annotations.yml
+++ b/scripts/audit_annotations.yml
@@ -114,15 +114,6 @@ datasets:
     description: FRED-derived snapshot
     provenance: constructed-committed
     note: make_data.py + README beside the data
-  japan_population_by_age.xlsx:
-    description: Japan population by age (prob_dist PMF example)
-    provenance: author-assembled
-    note: >
-      an e-Stat export with no recorded provenance, added by
-      lecture-python-intro#790. Superseded by japan_population_by_age.csv,
-      which is rebuilt from the Statistics Bureau original and manifested
-      here; this entry goes when the lecture repoints and the xlsx leaves the
-      lecture repo
   life-expectancy-vs-gdp-per-capita.csv:
     description: Our World in Data, life expectancy vs GDP per capita
     provenance: verbatim