diff --git a/stand/api.py b/stand/api.py
index 774476e..060fea5 100644
--- a/stand/api.py
+++ b/stand/api.py
@@ -51,4 +51,12 @@ def append_run(beamline: Beamline, pgroup: PGroup, run: int, row: dict[str, Any]
     return res
 
 
+@router.put("/pgroups/{pgroup}/runs/{run}/entries/{entry}")
+def set_entry(beamline: Beamline, pgroup: PGroup, run: int, entry: str, value: Any):
+    adb.get(beamline).update_cell(pgroup, run, entry, value)
+
+    for grid in grids[pgroup]:
+        grid.set_cell(run, entry, value)
+
+