diff --git a/.github/workflows/cleanup.sh b/.github/workflows/cleanup.sh
deleted file mode 100644
index 9153db88..00000000
--- a/.github/workflows/cleanup.sh
+++ /dev/null
@@ -1,6 +0,0 @@
-#!/bin/bash
-set -e
-
-if pkg=$(brew list | grep -E "pkg-config"); then
-    brew uninstall "$pkg" || true
-fi
diff --git a/.github/workflows/doc.yml b/.github/workflows/doc.yml
index e5f669a5..594bb059 100644
--- a/.github/workflows/doc.yml
+++ b/.github/workflows/doc.yml
@@ -16,10 +16,10 @@ jobs:
         uses: actions/setup-node@v4
         with:
           node-version: '20'
-          
+
       - name: Install embedme
         run: npm install -g embedme
-        
+
       - name: Verify README.md embedded code
         run: npx embedme --verify README.md
 
@@ -32,7 +32,7 @@ jobs:
     runs-on: ${{matrix.os}}
     steps:
       - uses: actions/checkout@v4
-        
+
       - name: Set up Go
         uses: actions/setup-go@v5
         with:
@@ -43,7 +43,6 @@ jobs:
         run: |
           set -e
           set -x
-          bash .github/workflows/cleanup.sh
           source doc/_readme/scripts/install_macos.sh
 
       - name: Install dependencies on Ubuntu
diff --git a/.github/workflows/go.yml b/.github/workflows/go.yml
index 8c6873d6..4cf46e31 100644
--- a/.github/workflows/go.yml
+++ b/.github/workflows/go.yml
@@ -41,9 +41,8 @@ jobs:
       - name: Install dependencies
         if: startsWith(matrix.os, 'macos')
         run: |
-          bash .github/workflows/cleanup.sh
           brew update
-          brew install llvm@${{matrix.llvm}} pkg-config bdw-gc openssl libffi
+          brew install llvm@${{matrix.llvm}} bdw-gc openssl libffi
           echo "$(brew --prefix llvm@${{matrix.llvm}})/bin" >> $GITHUB_PATH
           echo "PKG_CONFIG_PATH=/opt/homebrew/opt/libffi/lib/pkgconfig" >> $GITHUB_ENV
 
diff --git a/README.md b/README.md
index 605f6a72..b3989888 100644
--- a/README.md
+++ b/README.md
@@ -358,7 +358,7 @@ Follow these steps to generate the `llgo` command (its usage is the same as the
 
 ```sh
 brew update
-brew install llvm@18 pkg-config bdw-gc openssl cjson
+brew install llvm@18 bdw-gc openssl cjson
 brew install python@3.12 # optional
 go install -v github.com/goplus/llgo/cmd/llgo@latest
 ```
diff --git a/doc/_readme/scripts/install_macos.sh b/doc/_readme/scripts/install_macos.sh
index 9892979d..07c83514 100644
--- a/doc/_readme/scripts/install_macos.sh
+++ b/doc/_readme/scripts/install_macos.sh
@@ -1,5 +1,5 @@
 # shellcheck disable=all
 brew update
-brew install llvm@18 pkg-config bdw-gc openssl cjson
+brew install llvm@18 bdw-gc openssl cjson
 brew install python@3.12 # optional
 go install -v github.com/goplus/llgo/cmd/llgo@latest
\ No newline at end of file