diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index c306f64..316c6eb 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -1,7 +1,14 @@
 name: 🧪 & 📣
 on:
-  - push
-  - pull_request
+  push:
+    branches:
+      - main
+  pull_request:
+
+concurrency:
+  group: ${{ github.head_ref ||  github.ref }}
+  cancel-in-progress: true
+
 jobs:
   test:
     runs-on: ${{ matrix.os }}
@@ -11,13 +18,13 @@ jobs:
         os:
           - ubuntu-latest
           - macos-latest
-          - windows-latest
+          # - windows-latest
         architecture:
           - x64
           - arm64
-        exclude:
-          - os: windows-latest
-            architecture: arm64
+        # exclude:
+        #   - os: windows-latest
+        #     architecture: arm64
     steps:
       - uses: actions/checkout@v4
         with:
@@ -25,5 +32,24 @@ jobs:
       - uses: oven-sh/setup-bun@v1
         with:
           bun-version: latest
+      - run: brew install parallel
+        if: runner.os == 'macOS'
       - run: bun i
       - run: make tests
+
+  release:
+    needs: test
+    if: github.ref == 'refs/heads/main'
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+      issues: write
+      pull-requests: write
+      id-token: write
+    steps:
+      - uses: dyne/pnpm@v1
+      - run: pnpm build
+      - run: pnpm semantic-release
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          NPM_TOKEN: ${{ secrets.NPM_TOKEN }}
diff --git a/.gitignore b/.gitignore
index 0da5af0..54833a1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,5 @@
 slangroom-exec
+slangroom-exec-*
 # Based on https://raw.githubusercontent.com/github/gitignore/main/Node.gitignore
 
 # Logs
diff --git a/.releaserc b/.releaserc
new file mode 100644
index 0000000..ec178ca
--- /dev/null
+++ b/.releaserc
@@ -0,0 +1,48 @@
+{
+  "repositoryUrl": "git@github.com:dyne/slangroom-exec.git",
+  "dryRun": false,
+  "plugins": [
+    "@semantic-release/release-notes-generator",
+    "@semantic-release/changelog",
+    [
+      "@semantic-release/commit-analyzer",
+      {
+        "preset": "angular",
+        "releaseRules": [
+          { "type": "build", "scope": "deps", "release": "patch" },
+          { "type": "build", "scope": "deps-dev", "release": "patch" }
+        ]
+      }
+    ],
+    [
+      "@semantic-release/npm",
+      {
+        "npmPublish": true
+      }
+    ],
+    [
+      "@semantic-release/git",
+      {
+        "assets": [
+          "CHANGELOG.md",
+          "package.json"
+        ],
+        "message": "chore(release): 🚀 ${nextRelease.version} [skip ci]\n\n${nextRelease.notes}"
+      }
+    ],
+    [
+      "@semantic-release/github",
+      {
+        "assets": [
+          { "path": "slangroom-exec-darwin-x64", "name": "slangroom-exec-Darwin-x86_64" },
+          { "path": "slangroom-exec-darwin-arm64", "name": "slangroom-exec-Darwin-arm64" },
+          { "path": "slangroom-exec-linux-x64", "name": "slangroom-exec-Linux-x86_64" },
+          { "path": "slangroom-exec-linux-arm64", "name": "slangroom-exec-Linux-arm64" }
+        ]
+      }
+    ]
+  ],
+  "branches": [
+    "main"
+  ]
+}
diff --git a/Makefile b/Makefile
index b785ef4..80582f2 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,5 @@
 .PHONY: help
 
-
 PLATFORMS = linux-x64 linux-arm64 windows-x64 darwin-x64 darwin-arm64
 SOURCES = $(shell find src -type f -name '*.ts')
 LIBS = node_modules
@@ -27,7 +26,11 @@ clean: ## 🧹 Clean the build
 	@echo "🧹 Cleaned the build"
 
 tests: slangroom-exec ## 🧪 Run tests
+ifeq ($(OS),Windows_NT)
 	./test/bats/bin/bats test/*.bats
+else
+	./test/bats/bin/bats -j 15 test/*.bats
+endif
 	bun test --coverage
 
 $(LIBS): package.json
diff --git a/src/slexfe b/src/slexfe
index abc9d16..6c60b82 100755
--- a/src/slexfe
+++ b/src/slexfe
@@ -4,39 +4,47 @@
 # into a string that can be used in the slangroom-exec command
 
 print_help() {
-    echo -e "\033[1mUsage:\033[0m"
-    echo -e "  $0 [options]\n"
-    echo -e "\033[1mOptions:\033[0m"
-    echo -e "  -c, --conf               conf filename to read"
-    echo -e "  -s, --slangroom-contract slangroom-contract filename to read"
-    echo -e "  -d, --data               data filename to read"
-    echo -e "  -k, --keys               keys filename to read"
-    echo -e "  -e, --extra              extra filename to read"
-    echo -e "  -x, --context            context filename to read"
-    echo -e "  -F, --filename           lookup files based on a prefix"
-    echo -e "  -h, --help               Print this help message"
-    echo -e "\nEncode the parameters into a base64 string."
+    printf "\033[1mUsage:\033[0m"
+    printf "  $0 [options]\n"
+    printf "\033[1mOptions:\033[0m"
+    printf "  -c conf               conf filename to read"
+    printf "  -s slangroom-contract slangroom-contract filename to read"
+    printf "  -d data               data filename to read"
+    printf "  -k keys               keys filename to read"
+    printf "  -e extra              extra filename to read"
+    printf "  -x context            context filename to read"
+    printf "  -F filename           lookup files based on a prefix"
+    printf "  -h                    Print this help message"
+    printf "\nEncode the parameters into a base64 string."
     exit 1
 }
 
 # Function to encode to base64
 encode_base64() {
-    cat "$1" 2>/dev/null | base64 -w 0
+    if [[ "$OSTYPE" == "darwin"* ]]; then
+        cat "$1" 2>/dev/null | base64
+    else
+        cat "$1" 2>/dev/null | base64 -w 0
+    fi
 }
 
 encode_json_base64() {
-    jq -c . "$1" 2>/dev/null | base64 -w 0
+    if [[ "$OSTYPE" == "darwin"* ]]; then
+        jq -c . "$1" 2>/dev/null | base64
+    else
+        jq -c . "$1" 2>/dev/null | base64 -w 0
+    fi
 }
 
 # check that jq and getopt are installed
 
 if ! command -v jq &> /dev/null; then
-    echo "jq is not installed. Please install jq to use this script."
+    printf "jq is not installed. Please install jq to use this script."
     exit 1
 fi
 
 if ! command -v getopt &> /dev/null; then
-    echo "getopt is not installed. Please install getopt to use this script."
+    printf "getopt is not installed. Please install getopt to use this script."
     exit 1
 fi
 
@@ -48,43 +56,39 @@ keys=""
 extra=""
 context=""
 
-OPTIONS=$(getopt -o c:s:d:k:e:x:F:h --long conf:,slangroom-contract:,data:,keys:,extra:,context:,filename:,help -n 'parse-options' -- "$@")
-if [ $? -ne 0 ]; then
-    echo "Failed to parse options." >&2
-    exit 1
-fi
-eval set -- "$OPTIONS"
-
-while true; do
-    case "$1" in
-        -c|--conf)
-            conf=$(encode_base64 "$2"); shift 2 ;;
-        -s|--slangroom-contract)
-            slangroom_contract=$(encode_base64 "$2"); shift 2 ;;
-        -d|--data)
-            data=$(encode_json_base64 "$2"); shift 2 ;;
-        -k|--keys)
-            keys=$(encode_json_base64 "$2"); shift 2 ;;
-        -e|--extra)
-            extra=$(encode_json_base64 "$2"); shift 2 ;;
-        -x|--context)
-            context=$(encode_base64 "$2"); shift 2 ;;
-        -F|--filename)
-            conf=$(encode_base64 "${2}.conf")
-            slangroom_contract=$(encode_base64 "${2}.slang")
-            data=$(encode_json_base64 "${2}.data.json")
-            keys=$(encode_json_base64 "${2}.keys.json")
-            extra=$(encode_json_base64 "${2}.extra.json")
-            context=$(encode_base64 "${2}.context")
-            shift 2 ;;
-        -h|--help)
+while getopts "c:s:d:k:e:x:F:h" opt; do
+    case ${opt} in
+        c)
+            conf=$(encode_base64 "${OPTARG}");;
+        s)
+            slangroom_contract=$(encode_base64 "${OPTARG}");;
+        d)
+            data=$(encode_json_base64 "${OPTARG}");;
+        k)
+            keys=$(encode_json_base64 "${OPTARG}");;
+        e)
+            extra=$(encode_json_base64 "${OPTARG}");;
+        x)
+            context=$(encode_base64 "${OPTARG}");;
+        F)
+            conf=$(encode_base64 "${OPTARG}.conf")
+            slangroom_contract=$(encode_base64 "${OPTARG}.slang")
+            data=$(encode_json_base64 "${OPTARG}.data.json")
+            keys=$(encode_json_base64 "${OPTARG}.keys.json")
+            extra=$(encode_json_base64 "${OPTARG}.extra.json")
+            context=$(encode_base64 "${OPTARG}.context");;
+        h)
             print_help ;;
-        --)
-            shift; break ;;
-        *)
-            echo "Internal error!"; exit 1 ;;
+        \?)
+            printf "Invalid option: -${OPTARG}" >&2
+            exit 1 ;;
+        :)
+            printf "Option -${OPTARG} requires an argument." >&2
+            exit 1 ;;
     esac
 done
+shift $((OPTIND -1))
+
 
 # if slangroom-contract is empty, read it from stdin
 if [ -z "$slangroom_contract" ]; then
@@ -92,4 +96,5 @@ if [ -z "$slangroom_contract" ]; then
 fi
 
 # Print the encoded string
-echo -e "${conf}\n${slangroom_contract}\n${data}\n${keys}\n${extra}\n${context}"
+printf "${conf}\n${slangroom_contract}\n${data}\n${keys}\n${extra}\n${context}"
+
diff --git a/test/e2e.bats b/test/e2e.bats
index 089e630..7a3b2f9 100644
--- a/test/e2e.bats
+++ b/test/e2e.bats
@@ -48,4 +48,4 @@ setup() {
     run_slangroom_exec
     assert_output --partial "Invalid Zencode prefix 1: 'Gibberish'"
     assert_failure 1
-}
\ No newline at end of file
+}
diff --git a/test/test_helper/common-setup.bash b/test/test_helper/common-setup.bash
index aef6f5c..ac09002 100644
--- a/test/test_helper/common-setup.bash
+++ b/test/test_helper/common-setup.bash
@@ -21,5 +21,5 @@ load_fixture() {
 
 run_slangroom_exec() {
     bats_require_minimum_version 1.5.0
-    run bats_pipe echo "$slang_input" \| ./slangroom-exec
+    run bats_pipe printf "$slang_input" \| ./slangroom-exec
 }
\ No newline at end of file