diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index abf444e..aabfadd 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -20,9 +20,10 @@ jobs:
         uses: actions/setup-python@v1
         with:
           python-version: '3.x'
-      - run: grep --version
-      - run: echo "123" | grep -e "\d"
-      - run: echo "123" | grep "\d"
-      - run: echo "123" | grep -E "\d"
-      - run: echo "123" | ./internal/test_helpers/pass_all/your_grep.sh -E "\d"
+
+      - name: Set up Busybox
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y Busybox
+
       - run: make test
diff --git a/internal/test_helpers/pass_all/your_grep.sh b/internal/test_helpers/pass_all/your_grep.sh
index 7d2f525..a77fb02 100755
--- a/internal/test_helpers/pass_all/your_grep.sh
+++ b/internal/test_helpers/pass_all/your_grep.sh
@@ -1,2 +1,2 @@
 #!/bin/sh
-exec grep "$@"
+exec busybox grep "$@"