diff --git a/src/vim9execute.c b/src/vim9execute.c
index 02a895e..f8156c8 100644
--- a/src/vim9execute.c
+++ b/src/vim9execute.c
@@ -2297,6 +2297,32 @@
 		}
 		break;
 
+	    case ISN_ANYINDEX:
+	    case ISN_ANYSLICE:
+		{
+		    int		is_slice = iptr->isn_type == ISN_ANYSLICE;
+		    typval_T	*var1, *var2;
+		    int		res;
+
+		    // index: composite is at stack-2, index at stack-1
+		    // slice: composite is at stack-3, indexes at stack-2 and
+		    // stack-1
+		    tv = is_slice ? STACK_TV_BOT(-3) : STACK_TV_BOT(-2);
+		    if (check_can_index(tv, TRUE, TRUE) == FAIL)
+			goto on_error;
+		    var1 = is_slice ? STACK_TV_BOT(-2) : STACK_TV_BOT(-1);
+		    var2 = is_slice ? STACK_TV_BOT(-1) : NULL;
+		    res = eval_index_inner(tv, is_slice,
+						   var1, var2, NULL, -1, TRUE);
+		    clear_tv(var1);
+		    if (is_slice)
+			clear_tv(var2);
+		    ectx.ec_stack.ga_len -= is_slice ? 2 : 1;
+		    if (res == FAIL)
+			goto on_error;
+		}
+		break;
+
 	    case ISN_SLICE:
 		{
 		    list_T	*list;
@@ -3133,6 +3159,8 @@
 	    case ISN_STRSLICE: smsg("%4d STRSLICE", current); break;
 	    case ISN_LISTINDEX: smsg("%4d LISTINDEX", current); break;
 	    case ISN_LISTSLICE: smsg("%4d LISTSLICE", current); break;
+	    case ISN_ANYINDEX: smsg("%4d ANYINDEX", current); break;
+	    case ISN_ANYSLICE: smsg("%4d ANYSLICE", current); break;
 	    case ISN_SLICE: smsg("%4d SLICE %lld",
 					 current, iptr->isn_arg.number); break;
 	    case ISN_GETITEM: smsg("%4d ITEM %lld",