diff --git a/src/image.zig b/src/image.zig
index e3599be..704213d 100644
--- a/src/image.zig
+++ b/src/image.zig
@@ -312,7 +312,7 @@ pub const Image = struct {
 
         // now, for each param for the plugin, we find its port, and set
         // the value for the port there.
-        for (params.toSlice()) |param| {
+        for (params.items) |param| {
             var sym_cstr = try std.cstr.addNullByte(self.allocator, param.sym);
             defer self.allocator.free(sym_cstr);
 
diff --git a/src/lang.zig b/src/lang.zig
index 864940d..848cf9a 100644
--- a/src/lang.zig
+++ b/src/lang.zig
@@ -113,7 +113,7 @@ pub const Command = struct {
             try arr.append(value);
         }
 
-        return arr.toSliceConst();
+        return arr.items;
     }
 
     pub fn appendParam(
@@ -256,8 +256,7 @@ pub const Lang = struct {
         }
 
         while (i < count) : (i += 1) {
-            var arg = args.at(i);
-
+            var arg = args.items[i];
             _ = std.fmt.parseFloat(f32, arg) catch |err| {
                 std.debug.warn("failed to parse f32: {}\n", .{err});
                 return error.FloatParseFail;
diff --git a/src/main.zig b/src/main.zig
index 510c2d8..2b8da57 100644
--- a/src/main.zig
+++ b/src/main.zig
@@ -51,7 +51,7 @@ pub fn doRepl(allocator: *std.mem.Allocator, args_it: var) !void {
         defer existing_cmds.deinit();
 
         // copy the existing command list into the repl's command list
-        for (existing_cmds.toSlice()) |existing_cmd| {
+        for (existing_cmds.items) |existing_cmd| {
             try cmds.append(existing_cmd);
         }
     } else {
diff --git a/src/printer.zig b/src/printer.zig
index 940c7b3..ea91ec2 100644
--- a/src/printer.zig
+++ b/src/printer.zig
@@ -1,7 +1,7 @@
 const langs = @import("lang.zig");
 
 pub fn printList(list: langs.CommandList, stream: var) !void {
-    for (list.toSlice()) |cmd| {
+    for (list.items) |cmd| {
         var command = switch (cmd.command) {
             .Noop => "noop",
             .Load => "load",
@@ -47,7 +47,7 @@ pub fn printList(list: langs.CommandList, stream: var) !void {
 
         try stream.print("{}", .{command});
 
-        for (cmd.args.toSlice()) |arg| {
+        for (cmd.args.items) |arg| {
             try stream.print(" {}", .{arg});
         }
 
diff --git a/src/runner.zig b/src/runner.zig
index aa0a069..6276954 100644
--- a/src/runner.zig
+++ b/src/runner.zig
@@ -384,14 +384,14 @@ pub const Runner = struct {
         return switch (cmd.command) {
             .Noop => {},
             .Load => blk: {
-                var path = cmd.args.at(0);
+                var path = cmd.args.items[0];
                 try self.loadCmd(path);
 
                 // TODO is this needed?
                 break :blk;
             },
             .Quicksave => try self.quicksaveCmd(),
-            .RunQS => try self.runQSCmd(cmd.args.at(0)),
+            .RunQS => try self.runQSCmd(cmd.args.items[0]),
 
             .Amp => blk: {
                 const pos = try cmd.consumePosition();
@@ -547,7 +547,7 @@ pub const Runner = struct {
 
             .Embed => blk: {
                 const pos = try cmd.consumePosition();
-                const path = cmd.args.at(2);
+                const path = cmd.args.items[2];
                 try self.embedCmd(pos, path);
             },
 
@@ -775,7 +775,7 @@ pub const Runner = struct {
         cmds: lang.CommandList,
         debug_flag: bool,
     ) !void {
-        for (cmds.toSlice()) |const_cmd| {
+        for (cmds.items) |const_cmd| {
             if (debug_flag) const_cmd.print();
 
             // copy the command so we own its memory