diff --git a/.github/workflows/test_linux.yml b/.github/workflows/test_linux.yml
index f7f447dd..d3874586 100644
--- a/.github/workflows/test_linux.yml
+++ b/.github/workflows/test_linux.yml
@@ -15,10 +15,10 @@ jobs:
       matrix:
         cfg:
 #-------- Operating Systems ----------------
-          - { os: ubuntu, tag: 18.04,   arch: debian }         # EOL April 2023
-          - { os: ubuntu, tag: 20.04,   arch: debian }         # EOL April 2025
-          - { os: debian, tag: 10,      arch: debian }               # EOL 2024
-          - { os: centos, tag: 7,       arch: rhel   }          # EOL June 2024
+          # - { os: ubuntu, tag: 18.04,   arch: debian }         # EOL April 2023
+          # - { os: ubuntu, tag: 20.04,   arch: debian }         # EOL April 2025
+          # - { os: debian, tag: 10,      arch: debian }               # EOL 2024
+          # - { os: centos, tag: 7,       arch: rhel   }          # EOL June 2024
           - { os: centos, tag: latest,  arch: rhel   }     # 8 as of April 2020
         # - { os: fedora, tag: latest,  arch: rhel   }    # 31 as of April 2020
         # - { os: fedora, tag: 33,      arch: rhel   } # feeling confident?