diff --git a/.cargo/config.toml b/.cargo/config.toml
index 6b77899..6b509f5 100644
--- a/.cargo/config.toml
+++ b/.cargo/config.toml
@@ -1,2 +1,2 @@
 [build]
-target = "wasm32-wasi"
+target = "wasm32-wasip1"
diff --git a/README.md b/README.md
index 9f11c9d..4e68cd6 100644
--- a/README.md
+++ b/README.md
@@ -20,7 +20,7 @@ Requirements
 
 * Rust
   * [rustup.rs](https://rustup.rs) is the easiest way to install Rust.
-    * Then add the Wasm32-WASI target to your toolchain: `rustup target add wasm32-wasi`.
+    * Then add the Wasm32-WASI (snapshot 1) target to your toolchain: `rustup target add wasm32-wasip1`.
 
 Build
 =====
@@ -32,7 +32,7 @@ you can build it with:
 cargo build --release
 ```
 
-This will produce a .wasm file in `target/wasm32-wasi/release/`.
+This will produce a .wasm file in `target/wasm32-wasip1/release/`.
 
 Testing
 =======
diff --git a/test/demo.sh b/test/demo.sh
index e525cb1..7c19f5f 100755
--- a/test/demo.sh
+++ b/test/demo.sh
@@ -27,14 +27,14 @@ message "Building the filter using cargo..."
 
 (
     cd ..
-    cargo build --target=wasm32-wasi --release || exit 1
+    cargo build --target=wasm32-wasip1 --release || exit 1
 ) || exit 1
 
 ### Copy filter to wasm/ #######################################################
 
 mkdir -p wasm
 
-cp -a ../target/wasm32-wasi/release/*.wasm ../*.meta.json wasm/
+cp -a ../target/wasm32-wasip1/release/*.wasm ../*.meta.json wasm/
 
 script_dir=$(dirname $(realpath $0))