diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 5de4543..a13c6cc 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -35,7 +35,7 @@ jobs:
         sudo dpkg -i "$wasi_sdk_deb"
         echo "WASI_SDK_PATH=/opt/wasi-sdk" >> $GITHUB_ENV
       env:
-        WASI_SDK_VERSION_MAJOR: 14
+        WASI_SDK_VERSION_MAJOR: 16
         WASI_SDK_VERSION_MINOR: 0
     - run: CARGO_TARGET_WASM32_WASI_RUNNER=wasmtime cargo test --target wasm32-wasi
     - run: cargo build --target wasm32-unknown-unknown
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 857344f..c443176 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -49,7 +49,7 @@ jobs:
           sudo dpkg -i "$wasi_sdk_deb"
           echo "WASI_SDK_PATH=/opt/wasi-sdk" >> $GITHUB_ENV
         env:
-          WASI_SDK_VERSION_MAJOR: 14
+          WASI_SDK_VERSION_MAJOR: 16
           WASI_SDK_VERSION_MINOR: 0
       - uses: actions-rs/cargo@v1.0.1
         with:
diff --git a/README.md b/README.md
index 71d7cfb..155eec7 100644
--- a/README.md
+++ b/README.md
@@ -52,12 +52,12 @@ $ brew install kateinoigakukun/wasi-vfs/wasi-vfs
 
 ## Building
 
-To build the project, you need to install the [`wasi-sdk`](https://github.com/WebAssembly/wasi-sdk) version 14.0 or later.
+To build the project, you need to install the [`wasi-sdk`](https://github.com/WebAssembly/wasi-sdk) version 16.0 or later.
 
 ```console
 $ git clone https://github.com/kateinoigakukun/wasi-vfs.git --recurse-submodules
 $ cd wasi-vfs
-$ export WASI_VERSION=14
+$ export WASI_VERSION=16
 $ export WASI_VERSION_FULL=${WASI_VERSION}.0
 
 # For x86_64 Linux host machine
diff --git a/rust-toolchain.toml b/rust-toolchain.toml
index f89fff8..21a9419 100644
--- a/rust-toolchain.toml
+++ b/rust-toolchain.toml
@@ -1,3 +1,3 @@
 [toolchain]
-channel = "1.64.0"
+channel = "1.69.0"
 targets = [ "wasm32-unknown-unknown", "wasm32-wasi" ]