diff --git a/.github/workflows/scripts-testing.yml b/.github/workflows/scripts-testing.yml
index 51b9e28e..eecc04e5 100644
--- a/.github/workflows/scripts-testing.yml
+++ b/.github/workflows/scripts-testing.yml
@@ -23,7 +23,7 @@ jobs:
   base:
     strategy:
       matrix:
-        os: [macos-latest]
+        os: [ubuntu-latest, windows-latest, macos-latest, macos-13]
       fail-fast: false
     name: "${{ matrix.os }}"
     runs-on: "${{ matrix.os }}"
@@ -102,7 +102,7 @@ jobs:
                 *) ;;
               esac
             fi
-            if test "${2?}" = 'osh' || test "${2?}" = 'bosh'; then
+            if test "${2?}" = 'ksh93' || test "${2?}" = 'osh' || test "${2?}" = 'bosh'; then
               _s_shell="${2?}"
             else
               _s_shell="$(basename "${3:?}")" || _s_shell="${3?}"