diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 2a15f91..5752fc6 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -8,13 +8,22 @@ on:
 
 jobs:
   test:
-    runs-on: ubuntu-slim
+    strategy:
+      matrix:
+        os: [ubuntu-slim, macos-latest]
+    runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v6
       - name: Install dependencies
         run: |
-          sudo apt-get update
-          sudo apt-get install -y bash zsh
+          case "${{ matrix.os }}" in
+            "ubuntu-slim")
+              sudo apt-get update && sudo apt-get install -y bash zsh
+              ;;
+            "macos-latest")
+              brew install bash zsh
+              ;;
+          esac
       - name: Run tests
         run: |
           if ! ./tests/run-test.sh; then
diff --git a/tests/TEST.md b/tests/TEST.md
index 772e016..206dd9d 100644
--- a/tests/TEST.md
+++ b/tests/TEST.md
@@ -43,14 +43,14 @@ echo "h7 test"
 
 ```bash
 echo "bash test"
-echo "$BASH_VERSION"
+[ -n "$BASH_VERSION" ] && echo "This is bash"
 ```
 
 ## Zsh Shell
 
 ```zsh
 echo "zsh test"
-echo "$ZSH_VERSION"
+[ -n "$ZSH_VERSION" ] && echo "This is zsh"
 ```
 
 ## Shell Variant
diff --git a/tests/stderr.log b/tests/stderr.log
index 0b745bb..e7710c1 100644
--- a/tests/stderr.log
+++ b/tests/stderr.log
@@ -40,13 +40,15 @@ cute: Task not found: 'h7'
 --- Running test: 'Bash Shell' ---
 $ cute Bash Shell
 [Bash Shell]$ echo 'bash test'
-[Bash Shell]$ echo '5.2.21(1)-release'
+[Bash Shell]$ '[' -n '5.2.21(1)-release' ']'
+[Bash Shell]$ echo 'This is bash'
 --- Test 'Bash Shell' passed. ---
 
 --- Running test: 'Zsh Shell' ---
 $ cute Zsh Shell
 [Zsh Shell]$ echo 'zsh test'
-[Zsh Shell]$ echo 5.9
+[Zsh Shell]$ [ -n 5.9 ']'
+[Zsh Shell]$ echo 'This is zsh'
 --- Test 'Zsh Shell' passed. ---
 
 --- Running test: 'Shell Variant' ---
diff --git a/tests/stdout.log b/tests/stdout.log
index c1347e8..ee6a68a 100644
--- a/tests/stdout.log
+++ b/tests/stdout.log
@@ -86,13 +86,13 @@ $ cute h7
 --- Running test: 'Bash Shell' ---
 $ cute Bash Shell
 bash test
-5.2.21(1)-release
+This is bash
 --- Test 'Bash Shell' passed. ---
 
 --- Running test: 'Zsh Shell' ---
 $ cute Zsh Shell
 zsh test
-5.9
+This is zsh
 --- Test 'Zsh Shell' passed. ---
 
 --- Running test: 'Shell Variant' ---