diff --git a/ci/download-wasmtime.py b/ci/download-wasmtime.py
index bd8682ab..01ab44ae 100644
--- a/ci/download-wasmtime.py
+++ b/ci/download-wasmtime.py
@@ -10,7 +10,7 @@
 import zipfile
 from pathlib import Path
 
-WASMTIME_VERSION = "v15.0.0"
+WASMTIME_VERSION = "v16.0.0"
 
 
 def main(platform, arch):
diff --git a/rust/Cargo.lock b/rust/Cargo.lock
index 92566cad..38b5b678 100644
--- a/rust/Cargo.lock
+++ b/rust/Cargo.lock
@@ -29,15 +29,15 @@ dependencies = [
  "wasmtime-environ",
  "wit-bindgen",
  "wit-bindgen-core",
- "wit-component",
+ "wit-component 0.19.1",
  "wit-parser",
 ]
 
 [[package]]
 name = "bitflags"
-version = "2.3.3"
+version = "2.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "630be753d4e58660abd17930c71b647fe46c27ea6b63cc59e1e3851406972e42"
+checksum = "ed570934406eb16438a4e976b1b4500774099c13b8cb96eec99f620f05090ddf"
 
 [[package]]
 name = "cfg-if"
@@ -47,9 +47,9 @@ checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
 [[package]]
 name = "cranelift-entity"
-version = "0.102.0"
+version = "0.103.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2f871ada808b58158d84dfc43a6a2e2d2756baaf4ed1c51fd969ca8330e6ca5c"
+checksum = "44e3ee532fc4776c69bcedf7e62f9632cbb3f35776fa9a525cdade3195baa3f7"
 dependencies = [
  "serde",
  "serde_derive",
@@ -310,43 +310,29 @@ version = "0.9.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "49874b5167b65d7193b8aba1567f5c7d93d001cafc34600cee003eda787e483f"
 
-[[package]]
-name = "wasi"
-version = "0.11.0+wasi-snapshot-preview1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"
-
-[[package]]
-name = "wasi_snapshot_preview1"
-version = "0.1.0"
-dependencies = [
- "wasi",
- "wit-bindgen",
-]
-
 [[package]]
 name = "wasm-encoder"
-version = "0.36.2"
+version = "0.38.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "822b645bf4f2446b949776ffca47e2af60b167209ffb70814ef8779d299cd421"
+checksum = "0ad2b51884de9c7f4fe2fd1043fccb8dcad4b1e29558146ee57a144d15779f3f"
 dependencies = [
  "leb128",
 ]
 
 [[package]]
 name = "wasm-encoder"
-version = "0.38.0"
+version = "0.39.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7b09bc5df933a3dabbdb72ae4b6b71be8ae07f58774d5aa41bd20adcd41a235a"
+checksum = "111495d6204760238512f57a9af162f45086504da332af210f2f75dd80b34f1d"
 dependencies = [
  "leb128",
 ]
 
 [[package]]
 name = "wasm-metadata"
-version = "0.10.13"
+version = "0.10.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3b4a14bbedb07737809c00843d1f2f88ba0b8950c114283e0387e30b1b6ee558"
+checksum = "818931c85b1d197909699d36c509fa89550ccfa0d66932ba3c1726faddb4d0c7"
 dependencies = [
  "anyhow",
  "indexmap",
@@ -354,15 +340,15 @@ dependencies = [
  "serde_derive",
  "serde_json",
  "spdx",
- "wasm-encoder 0.38.0",
- "wasmparser 0.118.0",
+ "wasm-encoder 0.39.0",
+ "wasmparser 0.119.0",
 ]
 
 [[package]]
 name = "wasmparser"
-version = "0.116.1"
+version = "0.118.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a58e28b80dd8340cb07b8242ae654756161f6fc8d0038123d679b7b99964fa50"
+checksum = "95ee9723b928e735d53000dec9eae7b07a60e490c85ab54abb66659fc61bfcd9"
 dependencies = [
  "indexmap",
  "semver",
@@ -370,35 +356,36 @@ dependencies = [
 
 [[package]]
 name = "wasmparser"
-version = "0.118.0"
+version = "0.119.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ebbb91574de0011ded32b14db12777e7dd5e9ea2f9d7317a1ab51a9495c75924"
+checksum = "8c35daf77afb4f9b14016625144a391085ec2ca99ca9cc53ed291bb53ab5278d"
 dependencies = [
+ "bitflags",
  "indexmap",
  "semver",
 ]
 
 [[package]]
 name = "wasmprinter"
-version = "0.2.74"
+version = "0.2.76"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "61a7a046e6636d25c06a5df00bdc34e02f9e6e0e8a356d738299b961a6126114"
+checksum = "cac2a7745372074e5573e365e17100f5a26058740576313784ef03fb900ea8d2"
 dependencies = [
  "anyhow",
- "wasmparser 0.118.0",
+ "wasmparser 0.119.0",
 ]
 
 [[package]]
 name = "wasmtime-component-util"
-version = "15.0.0"
+version = "16.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3e85f1319a7ed36aa59446ab7e967d0c2fb0cd179bf56913633190b44572023e"
+checksum = "8c87d06c18d21a4818f354c00a85f4ebc62b2270961cd022968452b0e4dbed9d"
 
 [[package]]
 name = "wasmtime-environ"
-version = "15.0.0"
+version = "16.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c0116108e7d231cce15fe7dd642c66c3abb14dbcf169b0130e11f223ce8d1ad7"
+checksum = "61eb64fb3e0da883e2df4a13a81d6282e072336e6cb6295021d0f7ab2e352754"
 dependencies = [
  "anyhow",
  "cranelift-entity",
@@ -410,8 +397,8 @@ dependencies = [
  "serde_derive",
  "target-lexicon",
  "thiserror",
- "wasm-encoder 0.36.2",
- "wasmparser 0.116.1",
+ "wasm-encoder 0.38.1",
+ "wasmparser 0.118.1",
  "wasmprinter",
  "wasmtime-component-util",
  "wasmtime-types",
@@ -419,22 +406,22 @@ dependencies = [
 
 [[package]]
 name = "wasmtime-types"
-version = "15.0.0"
+version = "16.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "447973db3dc5c24db14130ab0922795c58790aec296d198ad9d253b82ec67471"
+checksum = "d995db8bb56f2cd8d2dc0ed5ffab94ffb435283b0fe6747f80f7aab40b2d06a1"
 dependencies = [
  "cranelift-entity",
  "serde",
  "serde_derive",
  "thiserror",
- "wasmparser 0.116.1",
+ "wasmparser 0.118.1",
 ]
 
 [[package]]
 name = "wit-bindgen"
-version = "0.14.0"
+version = "0.16.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0205c6e67438f9d657318e0d7ee407a8017cd7bc5f1636cd4a280d4ccbc8d4a0"
+checksum = "b76f1d099678b4f69402a421e888bbe71bf20320c2f3f3565d0e7484dbe5bc20"
 dependencies = [
  "bitflags",
  "wit-bindgen-rust-macro",
@@ -442,33 +429,33 @@ dependencies = [
 
 [[package]]
 name = "wit-bindgen-core"
-version = "0.14.0"
+version = "0.16.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4dfc34e539edf78da2efed167549962a4d26000db04694408285f52d90703fee"
+checksum = "75d55e1a488af2981fb0edac80d8d20a51ac36897a1bdef4abde33c29c1b6d0d"
 dependencies = [
  "anyhow",
- "wit-component",
+ "wit-component 0.18.2",
  "wit-parser",
 ]
 
 [[package]]
 name = "wit-bindgen-rust"
-version = "0.14.0"
+version = "0.16.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e898ad170a2796e9ecc495ce52cc2518dc35364ec042a4e108dd3c454e2a24c6"
+checksum = "a01ff9cae7bf5736750d94d91eb8a49f5e3a04aff1d1a3218287d9b2964510f8"
 dependencies = [
  "anyhow",
  "heck",
  "wasm-metadata",
  "wit-bindgen-core",
- "wit-component",
+ "wit-component 0.18.2",
 ]
 
 [[package]]
 name = "wit-bindgen-rust-macro"
-version = "0.14.0"
+version = "0.16.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cde5bc98cd9ebc817e7a0325120b5cf047643c2cc4583b917e66914215f94cff"
+checksum = "804a98e2538393d47aa7da65a7348116d6ff403b426665152b70a168c0146d49"
 dependencies = [
  "anyhow",
  "proc-macro2",
@@ -476,7 +463,7 @@ dependencies = [
  "syn",
  "wit-bindgen-core",
  "wit-bindgen-rust",
- "wit-component",
+ "wit-component 0.18.2",
 ]
 
 [[package]]
@@ -492,17 +479,36 @@ dependencies = [
  "serde",
  "serde_derive",
  "serde_json",
- "wasm-encoder 0.38.0",
+ "wasm-encoder 0.38.1",
+ "wasm-metadata",
+ "wasmparser 0.118.1",
+ "wit-parser",
+]
+
+[[package]]
+name = "wit-component"
+version = "0.19.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "429e3c06fba3a7566aab724ae3ffff3152ede5399d44789e7dd11f5421292859"
+dependencies = [
+ "anyhow",
+ "bitflags",
+ "indexmap",
+ "log",
+ "serde",
+ "serde_derive",
+ "serde_json",
+ "wasm-encoder 0.39.0",
  "wasm-metadata",
- "wasmparser 0.118.0",
+ "wasmparser 0.119.0",
  "wit-parser",
 ]
 
 [[package]]
 name = "wit-parser"
-version = "0.13.0"
+version = "0.13.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "15df6b7b28ce94b8be39d8df5cb21a08a4f3b9f33b631aedb4aa5776f785ead3"
+checksum = "df4913a2219096373fd6512adead1fb77ecdaa59d7fc517972a7d30b12f625be"
 dependencies = [
  "anyhow",
  "id-arena",
diff --git a/rust/Cargo.toml b/rust/Cargo.toml
index de246035..aef9f783 100644
--- a/rust/Cargo.toml
+++ b/rust/Cargo.toml
@@ -1,10 +1,10 @@
 [workspace]
-members = ['bindgen', 'wasi_snapshot_preview1']
+members = ['bindgen']
 resolver = "2"
 
 [workspace.dependencies]
-wit-bindgen = { version = "0.14.0", default-features = false, features = ['macros'] }
-wit-bindgen-core = "0.14.0"
+wit-bindgen = { version = "0.16.0", default-features = false, features = ['macros'] }
+wit-bindgen-core = "0.16.0"
 
 [profile.release]
 strip = 'debuginfo'
diff --git a/rust/bindgen/Cargo.toml b/rust/bindgen/Cargo.toml
index 2c6a990a..94b81f8b 100644
--- a/rust/bindgen/Cargo.toml
+++ b/rust/bindgen/Cargo.toml
@@ -11,10 +11,10 @@ crate-type = ['cdylib', 'rlib']
 [dependencies]
 anyhow = "1.0"
 heck = { version = "0.4", features = ["unicode"] }
-wit-parser = "0.13.0"
-wit-component = "0.18.0"
+wit-parser = "0.13.1"
+wit-component = "0.19.1"
 indexmap = "2.0"
-wasmtime-environ = { version = "15.0.0", features = ['component-model'] }
+wasmtime-environ = { version = "16.0.0", features = ['component-model'] }
 wit-bindgen = { workspace = true, features = ['default'] }
 wit-bindgen-core = { workspace = true }
 
diff --git a/rust/wasi_snapshot_preview1/Cargo.toml b/rust/wasi_snapshot_preview1/Cargo.toml
deleted file mode 100644
index daa4e9cd..00000000
--- a/rust/wasi_snapshot_preview1/Cargo.toml
+++ /dev/null
@@ -1,12 +0,0 @@
-[package]
-name = "wasi_snapshot_preview1"
-version = "0.1.0"
-edition = "2021"
-publish = false
-
-[lib]
-crate-type = ['cdylib']
-
-[dependencies]
-wasi = "0.11.0"
-wit-bindgen = { workspace = true, default-features = false, features = ['macros'] }
diff --git a/rust/wasi_snapshot_preview1/src/lib.rs b/rust/wasi_snapshot_preview1/src/lib.rs
deleted file mode 100644
index 0ed471a7..00000000
--- a/rust/wasi_snapshot_preview1/src/lib.rs
+++ /dev/null
@@ -1,72 +0,0 @@
-use std::arch::wasm32::unreachable;
-use wasi::*;
-
-wit_bindgen::generate!("python" in "../python.wit");
-
-#[no_mangle]
-pub extern "C" fn environ_get(environ: *mut *mut u8, environ_buf: *mut u8) -> Errno {
-    drop((environ, environ_buf));
-    ERRNO_SUCCESS
-}
-
-#[no_mangle]
-pub extern "C" fn environ_sizes_get(environc: *mut Size, environ_buf_size: *mut Size) -> Errno {
-    unsafe {
-        *environc = 0;
-        *environ_buf_size = 0;
-    }
-    ERRNO_SUCCESS
-}
-
-#[no_mangle]
-pub extern "C" fn fd_write(
-    fd: Fd,
-    mut iovs_ptr: *const Ciovec,
-    mut iovs_len: usize,
-    nwritten: *mut Size,
-) -> Errno {
-    if fd != 1 && fd != 2 {
-        unreachable();
-    }
-    unsafe {
-        // Advance to the first non-empty buffer.
-        while iovs_len != 0 && (*iovs_ptr).buf_len == 0 {
-            iovs_ptr = iovs_ptr.add(1);
-            iovs_len -= 1;
-        }
-        if iovs_len == 0 {
-            *nwritten = 0;
-            return ERRNO_SUCCESS;
-        }
-
-        let ptr = (*iovs_ptr).buf;
-        let len = (*iovs_ptr).buf_len;
-
-        let slice = core::slice::from_raw_parts(ptr, len);
-        if fd == 1 {
-            python::print(slice);
-        } else {
-            python::eprint(slice);
-        }
-
-        *nwritten = len;
-    }
-    ERRNO_SUCCESS
-}
-
-// Not exactly random but this is just a placeholder until there's a more
-// official preview1 adapter.
-#[no_mangle]
-pub unsafe extern "C" fn random_get(buf: *mut u8, buf_len: Size) -> Errno {
-    for i in 0..buf_len {
-        *buf.add(i) = 1;
-    }
-
-    ERRNO_SUCCESS
-}
-
-#[no_mangle]
-pub extern "C" fn proc_exit(rval: Exitcode) -> ! {
-    drop(rval);
-    unreachable() // TODO
-}
diff --git a/setup.py b/setup.py
index f7486a46..a95d3859 100644
--- a/setup.py
+++ b/setup.py
@@ -7,7 +7,7 @@
 with open("README.md", "r") as fh:
     long_description = fh.read()
 
-version = "15.0.0"
+version = "16.0.0"
 
 # Give unique version numbers to all commits so our publication-on-each commit
 # works on main
diff --git a/wasmtime/_bindings.py b/wasmtime/_bindings.py
index 6c1a4d1b..68416164 100644
--- a/wasmtime/_bindings.py
+++ b/wasmtime/_bindings.py
@@ -2180,6 +2180,12 @@ def wasmtime_config_cranelift_flag_enable(arg0: Any, arg1: Any) -> None:
 def wasmtime_config_cranelift_flag_set(arg0: Any, key: Any, value: Any) -> None:
     return _wasmtime_config_cranelift_flag_set(arg0, key, value)  # type: ignore
 
+_wasmtime_config_macos_use_mach_ports_set = dll.wasmtime_config_macos_use_mach_ports_set
+_wasmtime_config_macos_use_mach_ports_set.restype = None
+_wasmtime_config_macos_use_mach_ports_set.argtypes = [POINTER(wasm_config_t), c_bool]
+def wasmtime_config_macos_use_mach_ports_set(arg0: Any, arg1: Any) -> None:
+    return _wasmtime_config_macos_use_mach_ports_set(arg0, arg1)  # type: ignore
+
 wasmtime_memory_get_callback_t = CFUNCTYPE(c_size_t, c_void_p, POINTER(c_size_t), POINTER(c_size_t))
 
 wasmtime_memory_grow_callback_t = CFUNCTYPE(c_size_t, c_void_p, c_size_t)
@@ -2371,11 +2377,13 @@ def wasmtime_context_set_wasi(context: Any, wasi: Any) -> ctypes._Pointer:
 def wasmtime_context_set_epoch_deadline(context: Any, ticks_beyond_current: Any) -> None:
     return _wasmtime_context_set_epoch_deadline(context, ticks_beyond_current)  # type: ignore
 
+wasmtime_update_deadline_kind_t = c_uint8
+
 _wasmtime_store_epoch_deadline_callback = dll.wasmtime_store_epoch_deadline_callback
 _wasmtime_store_epoch_deadline_callback.restype = None
-_wasmtime_store_epoch_deadline_callback.argtypes = [POINTER(wasmtime_store_t), CFUNCTYPE(c_size_t, POINTER(wasmtime_context_t), c_void_p, POINTER(c_uint64)), c_void_p]
-def wasmtime_store_epoch_deadline_callback(store: Any, func: Any, data: Any) -> None:
-    return _wasmtime_store_epoch_deadline_callback(store, func, data)  # type: ignore
+_wasmtime_store_epoch_deadline_callback.argtypes = [POINTER(wasmtime_store_t), CFUNCTYPE(c_size_t, POINTER(wasmtime_context_t), c_void_p, POINTER(c_uint64), POINTER(wasmtime_update_deadline_kind_t)), c_void_p, CFUNCTYPE(None, c_void_p)]
+def wasmtime_store_epoch_deadline_callback(store: Any, func: Any, data: Any, finalizer: Any) -> None:
+    return _wasmtime_store_epoch_deadline_callback(store, func, data, finalizer)  # type: ignore
 
 class wasmtime_func(Structure):
     _fields_ = [
@@ -2685,8 +2693,8 @@ class wasmtime_instance_pre(Structure):
 _wasmtime_instance_pre_delete = dll.wasmtime_instance_pre_delete
 _wasmtime_instance_pre_delete.restype = None
 _wasmtime_instance_pre_delete.argtypes = [POINTER(wasmtime_instance_pre_t)]
-def wasmtime_instance_pre_delete(instance: Any) -> None:
-    return _wasmtime_instance_pre_delete(instance)  # type: ignore
+def wasmtime_instance_pre_delete(instance_pre: Any) -> None:
+    return _wasmtime_instance_pre_delete(instance_pre)  # type: ignore
 
 _wasmtime_instance_pre_instantiate = dll.wasmtime_instance_pre_instantiate
 _wasmtime_instance_pre_instantiate.restype = POINTER(wasmtime_error_t)
@@ -2694,6 +2702,12 @@ def wasmtime_instance_pre_delete(instance: Any) -> None:
 def wasmtime_instance_pre_instantiate(instance_pre: Any, store: Any, instance: Any, trap_ptr: Any) -> ctypes._Pointer:
     return _wasmtime_instance_pre_instantiate(instance_pre, store, instance, trap_ptr)  # type: ignore
 
+_wasmtime_instance_pre_module = dll.wasmtime_instance_pre_module
+_wasmtime_instance_pre_module.restype = POINTER(wasmtime_module_t)
+_wasmtime_instance_pre_module.argtypes = [POINTER(wasmtime_instance_pre_t)]
+def wasmtime_instance_pre_module(instance_pre: Any) -> ctypes._Pointer:
+    return _wasmtime_instance_pre_module(instance_pre)  # type: ignore
+
 class wasmtime_linker(Structure):
     pass