diff --git a/storage/postgreskv/client.go b/storage/postgreskv/client.go
index 77c188f9b..efab743f0 100644
--- a/storage/postgreskv/client.go
+++ b/storage/postgreskv/client.go
@@ -6,6 +6,7 @@ package postgreskv
 import (
 	"context"
 	"database/sql"
+	"sort"
 
 	"github.com/lib/pq"
 	"github.com/spacemonkeygo/monkit/v3"
@@ -164,6 +165,11 @@ func (client *Client) Delete(ctx context.Context, key storage.Key) (err error) {
 func (client *Client) DeleteMultiple(ctx context.Context, keys []storage.Key) (_ storage.Items, err error) {
 	defer mon.Task()(&ctx, len(keys))(&err)
 
+	// make sure deletes always happen in the same order
+	sort.Slice(keys, func(i, j int) bool {
+		return keys[i].Less(keys[j])
+	})
+
 	rows, err := client.db.QueryContext(ctx, `
 		DELETE FROM pathdata
 		WHERE fullpath = any($1::BYTEA[])