diff --git a/README.md b/README.md
index 86b63a8..3f116bb 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,7 @@
 
 # Getting Started
 ## Requirements
-- Zig 0.16.0-dev.2368: [Linux](https://ziglang.org/builds/zig-x86_64-linux-0.16.0-dev.2368+380ea6fb5.tar.xz)/[Windows](https://ziglang.org/builds/zig-x86_64-windows-0.16.0-dev.2368+380ea6fb5.zip)
+- Zig 0.16.0-dev.2459: [Linux](https://ziglang.org/builds/zig-x86_64-linux-0.16.0-dev.2459+37d14a4f3.tar.xz)/[Windows](https://ziglang.org/builds/zig-x86_64-windows-0.16.0-dev.2459+37d14a4f3.zip)
 
 #### For additional help, you can join our [discord server](https://discord.xeondev.com)
 
diff --git a/build.zig.zon b/build.zig.zon
index dafe942..f2574f7 100644
--- a/build.zig.zon
+++ b/build.zig.zon
@@ -1,7 +1,7 @@
 .{
     .name = .LR_S,
     .version = "0.1.0",
-    .minimum_zig_version = "0.16.0-dev.2368+380ea6fb5",
+    .minimum_zig_version = "0.16.0-dev.2459+37d14a4f3",
     .paths = .{""},
     .fingerprint = 0x50ff8392fab61337,
 }
diff --git a/common/src/io/poll.zig b/common/src/io/poll.zig
index 92c6528..500af64 100644
--- a/common/src/io/poll.zig
+++ b/common/src/io/poll.zig
@@ -1721,16 +1721,6 @@ pub fn Poll(comptime io_options: IoOptions) type {
             return tio.vtable.dirCreateDirPathOpen(tio.userdata, dir, sub_path, perm, options);
         }
 
-        fn fileWriteStreaming(userdata: ?*anyopaque, file: Io.File, header: []const u8, data: []const []const u8, splat: usize) Io.File.Writer.Error!usize {
-            const p: *ThisPoll = @ptrCast(@alignCast(userdata));
-            try checkCancel(p);
-
-            var t: Io.Threaded = .init_single_threaded;
-            const tio = t.io();
-
-            return tio.vtable.fileWriteStreaming(tio.userdata, file, header, data, splat);
-        }
-
         fn fileWritePositional(userdata: ?*anyopaque, file: Io.File, header: []const u8, data: []const []const u8, splat: usize, offset: u64) Io.File.WritePositionalError!usize {
             const p: *ThisPoll = @ptrCast(@alignCast(userdata));
             try checkCancel(p);
@@ -1791,14 +1781,16 @@ pub fn Poll(comptime io_options: IoOptions) type {
             return tio.vtable.fileReadPositional(tio.userdata, file, data, offset);
         }
 
-        fn fileReadStreaming(userdata: ?*anyopaque, file: Io.File, data: []const []u8) Io.File.Reader.Error!usize {
+        fn operate(userdata: ?*anyopaque, operation: Io.Operation) Io.Cancelable!Io.Operation.Result {
+            // TODO: implement network operations once they're migrated to this API.
+
             const p: *ThisPoll = @ptrCast(@alignCast(userdata));
             try checkCancel(p);
 
             var t: Io.Threaded = .init_single_threaded;
             const tio = t.io();
 
-            return tio.vtable.fileReadStreaming(tio.userdata, file, data);
+            return tio.vtable.operate(tio.userdata, operation);
         }
 
         fn socketClose(socket: posix.socket_t) void {
diff --git a/envrc b/envrc
index c314a74..f6356d5 100755
--- a/envrc
+++ b/envrc
@@ -1,7 +1,7 @@
 #!/bin/sh
 # DEPENDS: curl, tar, xz, realpath
 
-ZIG_VERSION="0.16.0-dev.2368+380ea6fb5"
+ZIG_VERSION="0.16.0-dev.2459+37d14a4f3"
 ZIG_PLATFORM="x86_64-linux"
 ZIG_DIST="zig-${ZIG_PLATFORM}-${ZIG_VERSION}"
 ZIG_DIR="./.direnv/${ZIG_DIST}/"