diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index fa2e07f..6c566ba 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -14,16 +14,12 @@ jobs:
     steps:
     - uses: actions/checkout@v6
     - uses: actions-rust-lang/setup-rust-toolchain@v1
-      with:
-        toolchain: 1.84.1
-        components: rustfmt
-        target: wasm32-unknown-unknown,wasm32-wasip2
     - name: Install cargo binstall
       uses: cargo-bins/cargo-binstall@main
-    - name: Install cargo component
-      run: cargo binstall --force cargo-component
     - name: Install wkg
       run: cargo binstall --force wkg
+    - name: Install cargo-component
+      run: cargo binstall --force cargo-component
     - name: Install wasm-tools
       run: cargo binstall --force wasm-tools
     - name: Fetch wit
@@ -61,10 +57,6 @@ jobs:
     steps:
     - uses: actions/checkout@v6
     - uses: actions-rust-lang/setup-rust-toolchain@v1
-      with:
-        toolchain: 1.84.1
-        components: rustfmt
-        target: wasm32-unknown-unknown
     - name: Install cargo binstall
       uses: cargo-bins/cargo-binstall@main
     - name: Install wkg
diff --git a/Makefile b/Makefile
index 78ccfe5..51bf186 100644
--- a/Makefile
+++ b/Makefile
@@ -20,9 +20,8 @@ components: $(foreach component,$(COMPONENTS),lib/$(component).wasm $(foreach co
 define BUILD_COMPONENT
 
 lib/$1.wasm: Cargo.toml Cargo.lock wit/deps $(shell find components/$1 -type f)
-	@$(eval TARGET := $(if $(findstring $1,keyvalue-to-filesystem),wasm32-wasip2,wasm32-unknown-unknown))
-	cargo component build -p $1 --target $(TARGET) --release
-	cp target/$(TARGET)/release/$(subst -,_,$1).wasm lib/$1.wasm
+	cargo component build -p $1 --target wasm32-unknown-unknown --release
+	cp target/wasm32-unknown-unknown/release/$(subst -,_,$1).wasm lib/$1.wasm
 	cp components/$1/README.md lib/$1.wasm.md
 
 lib/$1.debug.wasm: Cargo.toml Cargo.lock wit/deps $(shell find components/$1 -type f)
diff --git a/README.md b/README.md
index 78d8e5c..d593393 100644
--- a/README.md
+++ b/README.md
@@ -20,7 +20,7 @@ A collection of utility components that remix wasi:cli types and interfaces.
 ## Build
 
 Prereqs:
-- a rust toolchain with a recent nightly (`rustup toolchain install nightly`)
+- a rust toolchain
 - [`cargo component`](https://github.com/bytecodealliance/cargo-component)
 - [`wkg`](https://github.com/bytecodealliance/wasm-pkg-tools)
 
diff --git a/rust-toolchain.toml b/rust-toolchain.toml
new file mode 100644
index 0000000..798c4ad
--- /dev/null
+++ b/rust-toolchain.toml
@@ -0,0 +1,3 @@
+[toolchain]
+channel = "1.91"
+targets = [ "wasm32-unknown-unknown", "wasm32-wasip2" ]
diff --git a/wit/deps/wasi-cli-0.2.3/package.wit b/wit/deps/wasi-cli-0.2.6/package.wit
similarity index 71%
rename from wit/deps/wasi-cli-0.2.3/package.wit
rename to wit/deps/wasi-cli-0.2.6/package.wit
index b86dfec..d7a3ca4 100644
--- a/wit/deps/wasi-cli-0.2.3/package.wit
+++ b/wit/deps/wasi-cli-0.2.6/package.wit
@@ -1,4 +1,4 @@
-package wasi:cli@0.2.3;
+package wasi:cli@0.2.6;
 
 @since(version = 0.2.0)
 interface environment {
@@ -28,6 +28,17 @@ interface exit {
   /// Exit the current instance and any linked instances.
   @since(version = 0.2.0)
   exit: func(status: result);
+
+  /// Exit the current instance and any linked instances, reporting the
+  /// specified status code to the host.
+  ///
+  /// The meaning of the code depends on the context, with 0 usually meaning
+  /// "success", and other values indicating various types of failure.
+  ///
+  /// This function does not return; the effect is analogous to a trap, but
+  /// without the connotation that something bad has happened.
+  @unstable(feature = cli-exit-with-code)
+  exit-with-code: func(status-code: u8);
 }
 
 @since(version = 0.2.0)
@@ -40,7 +51,7 @@ interface run {
 @since(version = 0.2.0)
 interface stdin {
   @since(version = 0.2.0)
-  use wasi:io/streams@0.2.3.{input-stream};
+  use wasi:io/streams@0.2.6.{input-stream};
 
   @since(version = 0.2.0)
   get-stdin: func() -> input-stream;
@@ -49,7 +60,7 @@ interface stdin {
 @since(version = 0.2.0)
 interface stdout {
   @since(version = 0.2.0)
-  use wasi:io/streams@0.2.3.{output-stream};
+  use wasi:io/streams@0.2.6.{output-stream};
 
   @since(version = 0.2.0)
   get-stdout: func() -> output-stream;
@@ -58,7 +69,7 @@ interface stdout {
 @since(version = 0.2.0)
 interface stderr {
   @since(version = 0.2.0)
-  use wasi:io/streams@0.2.3.{output-stream};
+  use wasi:io/streams@0.2.6.{output-stream};
 
   @since(version = 0.2.0)
   get-stderr: func() -> output-stream;
@@ -134,11 +145,11 @@ world imports {
   @since(version = 0.2.0)
   import exit;
   @since(version = 0.2.0)
-  import wasi:io/error@0.2.3;
+  import wasi:io/error@0.2.6;
   @since(version = 0.2.0)
-  import wasi:io/poll@0.2.3;
+  import wasi:io/poll@0.2.6;
   @since(version = 0.2.0)
-  import wasi:io/streams@0.2.3;
+  import wasi:io/streams@0.2.6;
   @since(version = 0.2.0)
   import stdin;
   @since(version = 0.2.0)
@@ -156,33 +167,35 @@ world imports {
   @since(version = 0.2.0)
   import terminal-stderr;
   @since(version = 0.2.0)
-  import wasi:clocks/monotonic-clock@0.2.3;
+  import wasi:clocks/monotonic-clock@0.2.6;
   @since(version = 0.2.0)
-  import wasi:clocks/wall-clock@0.2.3;
+  import wasi:clocks/wall-clock@0.2.6;
+  @unstable(feature = clocks-timezone)
+  import wasi:clocks/timezone@0.2.6;
   @since(version = 0.2.0)
-  import wasi:filesystem/types@0.2.3;
+  import wasi:filesystem/types@0.2.6;
   @since(version = 0.2.0)
-  import wasi:filesystem/preopens@0.2.3;
+  import wasi:filesystem/preopens@0.2.6;
   @since(version = 0.2.0)
-  import wasi:sockets/network@0.2.3;
+  import wasi:sockets/network@0.2.6;
   @since(version = 0.2.0)
-  import wasi:sockets/instance-network@0.2.3;
+  import wasi:sockets/instance-network@0.2.6;
   @since(version = 0.2.0)
-  import wasi:sockets/udp@0.2.3;
+  import wasi:sockets/udp@0.2.6;
   @since(version = 0.2.0)
-  import wasi:sockets/udp-create-socket@0.2.3;
+  import wasi:sockets/udp-create-socket@0.2.6;
   @since(version = 0.2.0)
-  import wasi:sockets/tcp@0.2.3;
+  import wasi:sockets/tcp@0.2.6;
   @since(version = 0.2.0)
-  import wasi:sockets/tcp-create-socket@0.2.3;
+  import wasi:sockets/tcp-create-socket@0.2.6;
   @since(version = 0.2.0)
-  import wasi:sockets/ip-name-lookup@0.2.3;
+  import wasi:sockets/ip-name-lookup@0.2.6;
   @since(version = 0.2.0)
-  import wasi:random/random@0.2.3;
+  import wasi:random/random@0.2.6;
   @since(version = 0.2.0)
-  import wasi:random/insecure@0.2.3;
+  import wasi:random/insecure@0.2.6;
   @since(version = 0.2.0)
-  import wasi:random/insecure-seed@0.2.3;
+  import wasi:random/insecure-seed@0.2.6;
 }
 @since(version = 0.2.0)
 world command {
@@ -191,11 +204,11 @@ world command {
   @since(version = 0.2.0)
   import exit;
   @since(version = 0.2.0)
-  import wasi:io/error@0.2.3;
+  import wasi:io/error@0.2.6;
   @since(version = 0.2.0)
-  import wasi:io/poll@0.2.3;
+  import wasi:io/poll@0.2.6;
   @since(version = 0.2.0)
-  import wasi:io/streams@0.2.3;
+  import wasi:io/streams@0.2.6;
   @since(version = 0.2.0)
   import stdin;
   @since(version = 0.2.0)
@@ -213,33 +226,35 @@ world command {
   @since(version = 0.2.0)
   import terminal-stderr;
   @since(version = 0.2.0)
-  import wasi:clocks/monotonic-clock@0.2.3;
+  import wasi:clocks/monotonic-clock@0.2.6;
   @since(version = 0.2.0)
-  import wasi:clocks/wall-clock@0.2.3;
+  import wasi:clocks/wall-clock@0.2.6;
+  @unstable(feature = clocks-timezone)
+  import wasi:clocks/timezone@0.2.6;
   @since(version = 0.2.0)
-  import wasi:filesystem/types@0.2.3;
+  import wasi:filesystem/types@0.2.6;
   @since(version = 0.2.0)
-  import wasi:filesystem/preopens@0.2.3;
+  import wasi:filesystem/preopens@0.2.6;
   @since(version = 0.2.0)
-  import wasi:sockets/network@0.2.3;
+  import wasi:sockets/network@0.2.6;
   @since(version = 0.2.0)
-  import wasi:sockets/instance-network@0.2.3;
+  import wasi:sockets/instance-network@0.2.6;
   @since(version = 0.2.0)
-  import wasi:sockets/udp@0.2.3;
+  import wasi:sockets/udp@0.2.6;
   @since(version = 0.2.0)
-  import wasi:sockets/udp-create-socket@0.2.3;
+  import wasi:sockets/udp-create-socket@0.2.6;
   @since(version = 0.2.0)
-  import wasi:sockets/tcp@0.2.3;
+  import wasi:sockets/tcp@0.2.6;
   @since(version = 0.2.0)
-  import wasi:sockets/tcp-create-socket@0.2.3;
+  import wasi:sockets/tcp-create-socket@0.2.6;
   @since(version = 0.2.0)
-  import wasi:sockets/ip-name-lookup@0.2.3;
+  import wasi:sockets/ip-name-lookup@0.2.6;
   @since(version = 0.2.0)
-  import wasi:random/random@0.2.3;
+  import wasi:random/random@0.2.6;
   @since(version = 0.2.0)
-  import wasi:random/insecure@0.2.3;
+  import wasi:random/insecure@0.2.6;
   @since(version = 0.2.0)
-  import wasi:random/insecure-seed@0.2.3;
+  import wasi:random/insecure-seed@0.2.6;
 
   @since(version = 0.2.0)
   export run;
diff --git a/wit/deps/wasi-clocks-0.2.3/package.wit b/wit/deps/wasi-clocks-0.2.6/package.wit
similarity index 55%
rename from wit/deps/wasi-clocks-0.2.3/package.wit
rename to wit/deps/wasi-clocks-0.2.6/package.wit
index 92f2662..7004aa8 100644
--- a/wit/deps/wasi-clocks-0.2.3/package.wit
+++ b/wit/deps/wasi-clocks-0.2.6/package.wit
@@ -1,7 +1,7 @@
-package wasi:clocks@0.2.3;
+package wasi:clocks@0.2.6;
 
 interface monotonic-clock {
-  use wasi:io/poll@0.2.3.{pollable};
+  use wasi:io/poll@0.2.6.{pollable};
 
   type instant = u64;
 
@@ -27,3 +27,17 @@ interface wall-clock {
   resolution: func() -> datetime;
 }
 
+interface timezone {
+  use wall-clock.{datetime};
+
+  record timezone-display {
+    utc-offset: s32,
+    name: string,
+    in-daylight-saving-time: bool,
+  }
+
+  display: func(when: datetime) -> timezone-display;
+
+  utc-offset: func(when: datetime) -> s32;
+}
+
diff --git a/wit/deps/wasi-filesystem-0.2.3/package.wit b/wit/deps/wasi-filesystem-0.2.6/package.wit
similarity index 96%
rename from wit/deps/wasi-filesystem-0.2.3/package.wit
rename to wit/deps/wasi-filesystem-0.2.6/package.wit
index 1111df1..78bbb1e 100644
--- a/wit/deps/wasi-filesystem-0.2.3/package.wit
+++ b/wit/deps/wasi-filesystem-0.2.6/package.wit
@@ -1,8 +1,8 @@
-package wasi:filesystem@0.2.3;
+package wasi:filesystem@0.2.6;
 
 interface types {
-  use wasi:io/streams@0.2.3.{input-stream, output-stream, error};
-  use wasi:clocks/wall-clock@0.2.3.{datetime};
+  use wasi:io/streams@0.2.6.{input-stream, output-stream, error};
+  use wasi:clocks/wall-clock@0.2.6.{datetime};
 
   type filesize = u64;
 
diff --git a/wit/deps/wasi-io-0.2.3/package.wit b/wit/deps/wasi-io-0.2.6/package.wit
similarity index 98%
rename from wit/deps/wasi-io-0.2.3/package.wit
rename to wit/deps/wasi-io-0.2.6/package.wit
index e4d5ef7..72fefbe 100644
--- a/wit/deps/wasi-io-0.2.3/package.wit
+++ b/wit/deps/wasi-io-0.2.6/package.wit
@@ -1,4 +1,4 @@
-package wasi:io@0.2.3;
+package wasi:io@0.2.6;
 
 interface error {
   resource error {
diff --git a/wit/deps/wasi-random-0.2.3/package.wit b/wit/deps/wasi-random-0.2.6/package.wit
similarity index 91%
rename from wit/deps/wasi-random-0.2.3/package.wit
rename to wit/deps/wasi-random-0.2.6/package.wit
index bc1f891..7adcffa 100644
--- a/wit/deps/wasi-random-0.2.3/package.wit
+++ b/wit/deps/wasi-random-0.2.6/package.wit
@@ -1,4 +1,4 @@
-package wasi:random@0.2.3;
+package wasi:random@0.2.6;
 
 interface random {
   get-random-bytes: func(len: u64) -> list<u8>;
diff --git a/wit/deps/wasi-sockets-0.2.3/package.wit b/wit/deps/wasi-sockets-0.2.6/package.wit
similarity index 93%
rename from wit/deps/wasi-sockets-0.2.3/package.wit
rename to wit/deps/wasi-sockets-0.2.6/package.wit
index e7236e1..6bd7f21 100644
--- a/wit/deps/wasi-sockets-0.2.3/package.wit
+++ b/wit/deps/wasi-sockets-0.2.6/package.wit
@@ -1,6 +1,8 @@
-package wasi:sockets@0.2.3;
+package wasi:sockets@0.2.6;
 
 interface network {
+  use wasi:io/error@0.2.6.{error};
+
   resource network;
 
   enum error-code {
@@ -57,6 +59,8 @@ interface network {
     ipv4(ipv4-socket-address),
     ipv6(ipv6-socket-address),
   }
+
+  network-error-code: func(err: borrow<error>) -> option<error-code>;
 }
 
 interface instance-network {
@@ -66,7 +70,7 @@ interface instance-network {
 }
 
 interface udp {
-  use wasi:io/poll@0.2.3.{pollable};
+  use wasi:io/poll@0.2.6.{pollable};
   use network.{network, error-code, ip-socket-address, ip-address-family};
 
   record incoming-datagram {
@@ -115,9 +119,9 @@ interface udp-create-socket {
 }
 
 interface tcp {
-  use wasi:io/streams@0.2.3.{input-stream, output-stream};
-  use wasi:io/poll@0.2.3.{pollable};
-  use wasi:clocks/monotonic-clock@0.2.3.{duration};
+  use wasi:io/streams@0.2.6.{input-stream, output-stream};
+  use wasi:io/poll@0.2.6.{pollable};
+  use wasi:clocks/monotonic-clock@0.2.6.{duration};
   use network.{network, error-code, ip-socket-address, ip-address-family};
 
   enum shutdown-type {
@@ -166,7 +170,7 @@ interface tcp-create-socket {
 }
 
 interface ip-name-lookup {
-  use wasi:io/poll@0.2.3.{pollable};
+  use wasi:io/poll@0.2.6.{pollable};
   use network.{network, error-code, ip-address};
 
   resource resolve-address-stream {
diff --git a/wit/worlds.wit b/wit/worlds.wit
index 68e26f6..949618e 100644
--- a/wit/worlds.wit
+++ b/wit/worlds.wit
@@ -1,11 +1,11 @@
 package componentized:cli;
 
 world stderr-to-stdout {
-    import wasi:cli/stdout@0.2.3;
-    export wasi:cli/stderr@0.2.3;
+    import wasi:cli/stdout@0.2.6;
+    export wasi:cli/stderr@0.2.6;
 }
 
 world stdout-to-stderr {
-    import wasi:cli/stderr@0.2.3;
-    export wasi:cli/stdout@0.2.3;
+    import wasi:cli/stderr@0.2.6;
+    export wasi:cli/stdout@0.2.6;
 }
diff --git a/wkg.lock b/wkg.lock
index 33d20ed..c924860 100644
--- a/wkg.lock
+++ b/wkg.lock
@@ -7,6 +7,6 @@ name = "wasi:cli"
 registry = "wasi.dev"
 
 [[packages.versions]]
-requirement = "=0.2.3"
-version = "0.2.3"
-digest = "sha256:8f97d837e1f856a225422869d5c34752204d1befb5a04d0cd80541aec17a20c1"
+requirement = "=0.2.6"
+version = "0.2.6"
+digest = "sha256:fdbe84136b3dd46d94305ef37f24f3cf04a70cc2026dca2592ac2ec0c9de15c7"