diff --git a/.github/workflows/unit_tests.yml b/.github/workflows/unit_tests.yml
deleted file mode 100644
index dddd791..0000000
--- a/.github/workflows/unit_tests.yml
+++ /dev/null
@@ -1,41 +0,0 @@
-name: testssl.sh CI
-
-on:
-  pull_request:
-    paths-ignore:
-      - 'utils/**'
-      - 'doc/**'
-      - 'bin/**'
-      - '**.md'
-      - '**.pem'
-      - '**.pdf'
-      - '**.html'
-      - 'LICENSE'
-      - 'Dockerfile'
-      - 'Dockerfile.alpine'
-
-permissions:
-  contents: read
-
-jobs:
-  build:
-    runs-on: ${{ matrix.os }}
-    strategy:
-      matrix:
-        os: ['ubuntu-24.04']
-        perl: ['5.26']
-    name: Perl ${{ matrix.perl }} on ${{ matrix.os }}
-    steps:
-      - uses: actions/checkout@v4
-      - name: Set up perl
-        uses: shogo82148/actions-setup-perl@v1
-        with:
-          perl-version: ${{ matrix.perl }}
-      - run: perl -V
-      - name: Install deps
-        run: sudo apt install dnsutils jsonlint
-      - run: cpanm --notest Test::More
-      - run: cpanm --notest Data::Dumper
-      - run: cpanm --notest JSON
-      - run: cpanm --notest Text::Diff
-      - run: prove -v
diff --git a/.github/workflows/unit_tests_ubuntu.yml b/.github/workflows/unit_tests_ubuntu.yml
new file mode 100644
index 0000000..f42224d
--- /dev/null
+++ b/.github/workflows/unit_tests_ubuntu.yml
@@ -0,0 +1,60 @@
+---
+name: testssl.sh CI with Ubuntu
+
+on:
+  pull_request:
+    paths-ignore:
+      - 'utils/**'
+      - 'doc/**'
+      - 'bin/**'
+      - '**.md'
+      - '**.pem'
+      - '**.pdf'
+      - '**.html'
+      - 'LICENSE'
+      - 'Dockerfile'
+      - 'Dockerfile.alpine'
+
+permissions:
+  contents: read
+
+# see https://github.com/shogo82148/actions-setup-perl
+jobs:
+  build:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: ['ubuntu-24.04']
+        perl: ['5.38']
+    name: Unit test on ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up perl
+        uses: shogo82148/actions-setup-perl@v1
+        with:
+          perl-version: ${{ matrix.perl }}
+
+      - name: Install OS dependencies
+        run: |
+          sudo apt install dnsutils jsonlint
+          printf "%s\n" "----------"
+          perl -V
+          printf "%s\n" "----------"
+          curl --version
+          printf "%s\n" "----------"
+          openssl version -a
+          printf "%s\n" "----------"
+          bash --version
+          printf "%s\n" "----------"
+
+      - name: Install perl modules
+        run: |
+        cpanm --notest Test::More
+        cpanm --notest Data::Dumper
+        cpanm --notest JSON
+        cpanm --notest Text::Diff
+
+      - name: run it
+        run: |
+          prove -v t