diff --git a/app/scodoc/sco_formsemestre_inscriptions.py b/app/scodoc/sco_formsemestre_inscriptions.py
index 739ace4ff..cdbe2c57b 100644
--- a/app/scodoc/sco_formsemestre_inscriptions.py
+++ b/app/scodoc/sco_formsemestre_inscriptions.py
@@ -176,6 +176,9 @@ def do_formsemestre_demission(
     )
     db.session.add(event)
     db.session.commit()
+    sco_cache.invalidate_formsemestre(
+        formsemestre_id=formsemestre_id
+    )  # > démission ou défaillance
     if etat_new == scu.DEMISSION:
         flash("Démission enregistrée")
     elif etat_new == scu.DEF:
@@ -188,7 +191,7 @@ def do_formsemestre_inscription_edit(args=None, formsemestre_id=None):
     _formsemestre_inscriptionEditor.edit(cnx, args)
     sco_cache.invalidate_formsemestre(
         formsemestre_id=formsemestre_id
-    )  # > modif inscription semestre (demission ?)
+    )  # > modif inscription semestre
 
 
 def do_formsemestre_desinscription(etudid, formsemestre_id):
@@ -240,6 +243,7 @@ def do_formsemestre_desinscription(etudid, formsemestre_id):
     do_formsemestre_inscription_delete(
         insem["formsemestre_inscription_id"], formsemestre_id=formsemestre_id
     )
+    sco_cache.invalidate_formsemestre(formsemestre_id=formsemestre_id)
     # --- Semestre extérieur
     if formsemestre.modalite == "EXT":
         inscrits = do_formsemestre_inscription_list(