diff --git a/.github/workflows/testsuite.yml b/.github/workflows/testsuite.yml
index 67e11708b297..ad00c2e7b724 100644
--- a/.github/workflows/testsuite.yml
+++ b/.github/workflows/testsuite.yml
@@ -819,8 +819,8 @@ jobs:
         perl-version:
           - '5.38'
           - '5.24'
+          - '5.18'
           - '5.10'
-          - '5.8'
         threads:
           - enable: true
             label: -Dusethreads
@@ -833,7 +833,7 @@ jobs:
         uses: shogo82148/actions-setup-perl@v1.30.0
         with:
           perl-version: ${{ matrix.perl-version }}
-          multi-thread: ${{ matrix.threads.id }}
+          multi-thread: ${{ matrix.threads.enable }}
           install-modules:
             ExtUtils::MakeMaker
             Perl::OSType