diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 8f457e4..552e056 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -85,9 +85,9 @@ jobs:
       - name: Install dependencies
         if: env.CI_SKIP == 'false'
         run: |
-          bash ./list-npx-cache.bash
+          bash ./list-npx-cache.sh
           npm ci
-          bash ./list-npx-cache.bash
+          bash ./list-npx-cache.sh
 
       - name: Lint
         if: env.CI_SKIP == 'false'
diff --git a/list-npx-cache.bash b/list-npx-cache.sh
similarity index 94%
rename from list-npx-cache.bash
rename to list-npx-cache.sh
index d8851c2..33ebe22 100644
--- a/list-npx-cache.bash
+++ b/list-npx-cache.sh
@@ -1,11 +1,11 @@
-#!/bin/bash
+#!/bin/sh
 
 # NOTE: THere is a discrepancy in the npx cache in npm between 8.4.1 and 8.1.4.
 # There is an additional zx found in the npx cache when compared to the local npx cache using 8.1.4.
 
 NPX_CACHE_DIR="$(npm config get cache)/_npx"
 
-if [[ -d $NPX_CACHE_DIR ]]; then
+if [ -d "$NPX_CACHE_DIR" ]; then
   FILES=$(find $NPX_CACHE_DIR -type f | grep -v 'node_modules' | grep -v 'package-lock.json')
   # FILES=$(find $NPX_CACHE_DIR -type f | grep -v 'node_modules')
 
diff --git a/package.json b/package.json
index 0f25b2d..be57bc4 100644
--- a/package.json
+++ b/package.json
@@ -44,7 +44,7 @@
   "scripts": {
     "build": "npm run clean && tsc",
     "clean": "rm -rf .*cache *.log .swc/ coverage/ dist/ logs/",
-    "postinstall": "bash postinstall.bash",
+    "postinstall": "sh postinstall.sh",
     "lint": "eslint src --ext .js,.ts",
     "lint:build": "npm run lint -- --config .build.eslintrc.json",
     "lint:commit": "npm x -y -- commitlint@latest --edit",
diff --git a/postinstall.bash b/postinstall.sh
similarity index 76%
rename from postinstall.bash
rename to postinstall.sh
index 6cd948a..f8eeb42 100644
--- a/postinstall.bash
+++ b/postinstall.sh
@@ -1,3 +1,3 @@
-#!/bin/bash
+#!/bin/sh
 
 npx -y -- zx@latest ./postinstall.mjs