diff --git a/src/testdir/test_vim9_assign.vim b/src/testdir/test_vim9_assign.vim
index 4e78b5d..73351b4 100644
--- a/src/testdir/test_vim9_assign.vim
+++ b/src/testdir/test_vim9_assign.vim
@@ -1152,6 +1152,10 @@
     dd.a.b = [0]
     dd.a.b += [1]
     assert_equal({a: {b: [0, 1]}}, dd)
+
+    var dab = {a: ['b']}
+    dab.a[0] ..= 'c'
+    assert_equal({a: ['bc']}, dab)
   END
   CheckDefAndScriptSuccess(lines)
 enddef
diff --git a/src/version.c b/src/version.c
index 9696f5a..ef8f999 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2724,
+/**/
     2723,
 /**/
     2722,