diff --git a/.devcontainer/finalize.sh b/.devcontainer/finalize.sh
index abbb67697..7ae6c6b4b 100644
--- a/.devcontainer/finalize.sh
+++ b/.devcontainer/finalize.sh
@@ -5,7 +5,7 @@ printf "Installing Rust Targets\n"
 rustup update stable --no-self-update
 rustup default stable
 rustup target add wasm32-unknown-unknown
-rustup target add wasm32-wasi
+rustup target add wasm32-wasip1
 
 # Install Python stuff
 printf "Installing Python Dependencies"
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 23debb49b..b40b72917 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -64,8 +64,8 @@ jobs:
       run: rustup update stable --no-self-update && rustup default stable
     - name: Install wasm32-unknown-unknown target
       run: rustup target add wasm32-unknown-unknown
-    - name: Install wasm32-wasi target
-      run: rustup target add wasm32-wasi
+    - name: Install wasm32-wasip1 target
+      run: rustup target add wasm32-wasip1
 
     - uses: ./.github/actions/install-wasi-sdk
 
@@ -118,8 +118,8 @@ jobs:
       run: rustup update stable --no-self-update && rustup default stable
     - name: Install wasm32-unknown-unknown target
       run: rustup target add wasm32-unknown-unknown
-    - name: Install wasm32-wasi target
-      run: rustup target add wasm32-wasi
+    - name: Install wasm32-wasip1 target
+      run: rustup target add wasm32-wasip1
 
     # Verify the output of the `./ci/rebuild-libcabi-realloc.sh` script is
     # up-to-date.
@@ -138,10 +138,10 @@ jobs:
     - run: cargo build --no-default-features --features markdown
 
     # Feature combos of the `wit-bindgen` crate
-    - run: cargo build --target wasm32-wasi -p wit-bindgen --no-default-features
-    - run: cargo build --target wasm32-wasi -p wit-bindgen --no-default-features --features realloc
-    - run: cargo build --target wasm32-wasi -p wit-bindgen --no-default-features --features macros
-    - run: cargo build --target wasm32-wasi -p wit-bindgen --no-default-features --features macros,realloc
+    - run: cargo build --target wasm32-wasip1 -p wit-bindgen --no-default-features
+    - run: cargo build --target wasm32-wasip1 -p wit-bindgen --no-default-features --features realloc
+    - run: cargo build --target wasm32-wasip1 -p wit-bindgen --no-default-features --features macros
+    - run: cargo build --target wasm32-wasip1 -p wit-bindgen --no-default-features --features macros,realloc
 
     # Verity that documentation can be generated for the rust bindings crate.
     - run: cargo doc -p wit-bindgen --no-deps
diff --git a/crates/test-rust-wasm/artifacts/build.rs b/crates/test-rust-wasm/artifacts/build.rs
index bc8ca771a..ba41a22c5 100644
--- a/crates/test-rust-wasm/artifacts/build.rs
+++ b/crates/test-rust-wasm/artifacts/build.rs
@@ -13,14 +13,14 @@ fn main() {
     let mut cmd = Command::new("cargo");
     cmd.arg("build")
         .current_dir("../../test-rust-wasm")
-        .arg("--target=wasm32-wasi")
+        .arg("--target=wasm32-wasip1")
         .env("CARGO_TARGET_DIR", &out_dir)
         .env("CARGO_PROFILE_DEV_DEBUG", "1");
     let status = cmd.status().unwrap();
     assert!(status.success());
 
     let mut wasms = Vec::new();
-    for file in out_dir.join("wasm32-wasi/debug").read_dir().unwrap() {
+    for file in out_dir.join("wasm32-wasip1/debug").read_dir().unwrap() {
         let file = file.unwrap().path();
         if file.extension().and_then(|s| s.to_str()) != Some("wasm") {
             continue;
diff --git a/tests/README.md b/tests/README.md
index fccf9b523..cc5f2f9d8 100644
--- a/tests/README.md
+++ b/tests/README.md
@@ -8,7 +8,7 @@ There are a few pre-requisites to testing the project. You only need the languag
   - Create an environment variable called `WASI_SDK_PATH`` giving the path where you extracted the WASI SDK download, i.e., the directory containing `bin`/`lib`/`share`` folders.
 - Compilers for the target language:
   - Go + TinyGo - https://tinygo.org/ (v0.27.0+)
-  - Rust - wasi target: `rustup target add wasm32-wasi`
+  - Rust - wasi target: `rustup target add wasm32-wasip1`
   - Java - TeaVM-WASI `ci/download-teamvm.sh`
   - C - [Clang](https://clang.llvm.org/)
   - C# - [Dotnet 8](https://dotnet.microsoft.com/en-us/download/dotnet/8.0)