diff --git a/.github/ci.js b/.github/ci.js
index 5270a12..3275a26 100755
--- a/.github/ci.js
+++ b/.github/ci.js
@@ -2,8 +2,6 @@
 
 // Fork from https://github.com/ankane/setup-mysql/blob/v1/index.js#L50
 
-// TODO: this script failed on github now, see
-// https://github.com/zigcc/zig-cookbook/issues/54
 const execSync = require("child_process").execSync;
 const fs = require('fs');
 const os = require('os');
@@ -22,9 +20,9 @@ function addToPath(newPath) {
   fs.appendFileSync(process.env.GITHUB_PATH, `${newPath}\n`);
 }
 
-// install
+// config
 const mysqlVersion = '8.0';
-const rootPass = '123';
+const rootPass = 'password';
 const database = 'public';
 
 // install
@@ -41,8 +39,8 @@ run(`${bin}/mysql -e "GRANT ALL PRIVILEGES ON *.* TO '$USER'@'localhost'"`);
 run(`${bin}/mysql -e "FLUSH PRIVILEGES"`);
 
 // init
-run(`${bin}/mysqladmin -proot password '${rootPass}'`);
-run(`${bin}/mysqladmin create ${database}`);
+run(`${bin}/mysql -uroot -e "CREATE DATABASE ${database}"`);
+run(`${bin}/mysql -uroot -e "ALTER USER 'root'@'localhost' IDENTIFIED WITH caching_sha2_password BY '${rootPass}'; FLUSH PRIVILEGES;"`)
 
 // set path
 addToPath(bin);
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 3556f17..3627683 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -7,13 +7,13 @@ on:
   pull_request:
     paths:
       - "**.zig"
-      - ".github/workflows/**"
+      - ".github/**"
   push:
     branches:
       - main
     paths:
       - "**.zig"
-      - ".github/workflows/**"
+      - ".github/**"
 
 jobs:
   examples:
@@ -22,10 +22,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        # CI cannot run on macOS, see
-        # https://github.com/zigcc/zig-cookbook/issues/54
-        # os: [ubuntu-latest, macos-latest]
-        os: [ubuntu-latest]
+        os: [ubuntu-latest, macos-latest]
         zig: [0.11.0, master]
     steps:
       - uses: actions/checkout@v4
@@ -47,7 +44,7 @@ jobs:
           collation server: 'utf8_general_ci'
           mysql version: '8.0'
           mysql database: 'public'
-          mysql root password: 123
+          mysql root password: 'password'
           mysql user: 'developer'
       - name: mysql for macOS
         if: matrix.os == 'macos-latest'
diff --git a/docker-compose.yml b/docker-compose.yml
index 1e423ba..c903aac 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -11,7 +11,7 @@ services:
   mysql:
     image: mysql:8.0
     environment:
-      MYSQL_ROOT_PASSWORD: "123"
+      MYSQL_ROOT_PASSWORD: "password"
       MYSQL_DATABASE: public
     ports:
       - "3306:3306"
diff --git a/src/14-03.zig b/src/14-03.zig
index 8e7fc37..e35da0d 100644
--- a/src/14-03.zig
+++ b/src/14-03.zig
@@ -49,7 +49,6 @@ pub const DB = struct {
 
     fn deinit(self: DB) void {
         c.mysql_close(self.conn);
-        return;
     }
 
     fn execute(self: DB, query: []const u8) !void {
@@ -57,8 +56,6 @@ pub const DB = struct {
             print("Exec query failed: {s}\n", .{c.mysql_error(self.conn)});
             return error.execError;
         }
-
-        return;
     }
 
     fn queryTable(self: DB) !void {
@@ -83,7 +80,6 @@ pub const DB = struct {
         while (c.mysql_fetch_row(result)) |row| {
             const cat_name = row[0];
             const color_name = row[1];
-
             print("Cat: {s}, Color: {s}\n", .{ cat_name, color_name });
         }
     }
@@ -177,8 +173,6 @@ pub const DB = struct {
                 _ = c.mysql_stmt_reset(insert_cat_stmt);
             }
         }
-
-        return;
     }
 };
 
@@ -188,16 +182,14 @@ pub fn main() !void {
     const allocator = gpa.allocator();
 
     const version = c.mysql_get_client_version();
-    print("mysql version is {}\n", .{version});
+    print("MySQL client version is {}\n", .{version});
 
-    const info: DBInfo = .{
+    const db = try DB.init(allocator, .{
         .database = "public",
         .host = "127.0.0.1",
         .user = "root",
-        .password = "123",
-    };
-
-    const db = try DB.init(allocator, info);
+        .password = "password",
+    });
     defer db.deinit();
 
     try db.execute(