diff --git a/README.md b/README.md
index 3bc2a6e..8842bbf 100644
--- a/README.md
+++ b/README.md
@@ -8,6 +8,8 @@
 
 # Contents
 
+- [asdf-scala-cli  ](#asdf-scala-cli--)
+- [Contents](#contents)
 - [Dependencies](#dependencies)
 - [Install](#install)
 - [Contributing](#contributing)
@@ -15,10 +17,7 @@
 
 # Dependencies
 
-**TODO: adapt this section**
-
-- `bash`, `curl`, `tar`: generic POSIX utilities.
-- `SOME_ENV_VAR`: set this environment variable in your shell config to load the correct version of tool x.
+- `bash`, `curl`, `gzip`: generic POSIX utilities.
 
 # Install
 
diff --git a/bin/download b/bin/download
index c11ee53..fe61feb 100755
--- a/bin/download
+++ b/bin/download
@@ -10,14 +10,11 @@ source "${plugin_dir}/lib/utils.bash"
 
 mkdir -p "$ASDF_DOWNLOAD_PATH"
 
-# TODO: Adapt this to proper extension and adapt extracting strategy.
-release_file="$ASDF_DOWNLOAD_PATH/$TOOL_NAME-$ASDF_INSTALL_VERSION.tar.gz"
+release_file="$ASDF_DOWNLOAD_PATH/$TOOL_NAME.gz"
 
 # Download tar.gz file to the download directory
 download_release "$ASDF_INSTALL_VERSION" "$release_file"
 
 #  Extract contents of tar.gz file into the download directory
-tar -xzf "$release_file" -C "$ASDF_DOWNLOAD_PATH" --strip-components=1 || fail "Could not extract $release_file"
-
-# Remove the tar.gz file since we don't need to keep it
-rm "$release_file"
+# tar -xzf "$release_file" -C "$ASDF_DOWNLOAD_PATH" --strip-components=1 || fail "Could not extract $release_file"
+(pushd "$ASDF_DOWNLOAD_PATH" && gzip -d "$TOOL_NAME" && chmod +x "$TOOL_NAME" && popd )|| fail "Could not extract $release_file"
diff --git a/contributing.md b/contributing.md
index dba9b98..97aa798 100644
--- a/contributing.md
+++ b/contributing.md
@@ -5,8 +5,7 @@ Testing Locally:
 ```shell
 asdf plugin test <plugin-name> <plugin-url> [--asdf-tool-version <version>] [--asdf-plugin-gitref <git-ref>] [test-command*]
 
-# TODO: adapt this
-asdf plugin test scala-cli https://github.com/rlemaitre/asdf-scala-cli.git "scala-cli --help"
+asdf plugin test scala-cli https://github.com/rlemaitre/asdf-scala-cli.git "scala-cli version"
 ```
 
 Tests are automatically run in GitHub Actions on push and PR.
diff --git a/lib/utils.bash b/lib/utils.bash
index 6130f33..86fe82c 100644
--- a/lib/utils.bash
+++ b/lib/utils.bash
@@ -2,10 +2,9 @@
 
 set -euo pipefail
 
-# TODO: Ensure this is the correct GitHub homepage where releases can be downloaded for scala-cli.
 GH_REPO="https://github.com/VirtusLab/scala-cli"
 TOOL_NAME="scala-cli"
-TOOL_TEST="scala-cli --help"
+TOOL_TEST="scala-cli version"
 
 fail() {
 	echo -e "asdf-$TOOL_NAME: $*"
@@ -31,18 +30,29 @@ list_github_tags() {
 }
 
 list_all_versions() {
-	# TODO: Adapt this. By default we simply list the tag names from GitHub releases.
-	# Change this function if scala-cli has other means of determining installable versions.
 	list_github_tags
 }
 
 download_release() {
-	local version filename url
+	local version filename url arch os
 	version="$1"
 	filename="$2"
-
-	# TODO: Adapt the release URL convention for scala-cli
-	url="$GH_REPO/archive/v${version}.tar.gz"
+	arch="$(uname -m)"
+	if [[ "$arch" == 'arm64' ]]; then
+		arch='aarch64'
+	else
+		arch='x86_64'
+	fi
+	os="$(uname -s)"
+	case $os in
+		'Linux')
+			url="$GH_REPO/releases/download/v${version}/scala-cli-$arch-pc-linux.gz"
+			;;
+		'Darwin')
+			url="$GH_REPO/releases/download/v${version}/scala-cli-$arch-apple-darwin.gz"
+			;;
+		*) ;;
+	esac
 
 	echo "* Downloading $TOOL_NAME release $version..."
 	curl "${curl_opts[@]}" -o "$filename" -C - "$url" || fail "Could not download $url"
@@ -61,7 +71,6 @@ install_version() {
 		mkdir -p "$install_path"
 		cp -r "$ASDF_DOWNLOAD_PATH"/* "$install_path"
 
-		# TODO: Assert scala-cli executable exists.
 		local tool_cmd
 		tool_cmd="$(echo "$TOOL_TEST" | cut -d' ' -f1)"
 		test -x "$install_path/$tool_cmd" || fail "Expected $install_path/$tool_cmd to be executable."