diff --git a/.github/workflows/linux.yml b/.github/workflows/linux.yml
index 6e9342e..9652095 100644
--- a/.github/workflows/linux.yml
+++ b/.github/workflows/linux.yml
@@ -12,8 +12,7 @@ jobs:
         shell: perl {0}
         run: |
           use Actions::Core;
-          set_output(matrix => {perl => [perl_versions()]});
-          set_output(matrix => {perl => [grep { $_ !~ /^5\.6/ } perl_versions()]});
+          set_output(matrix => {perl => [grep { $_ !~ /^5\.[68]/ } perl_versions()]});
     outputs:
       matrix: ${{ steps.set-matrix.outputs.matrix }}