diff --git a/.github/workflows/testsuite.yml b/.github/workflows/testsuite.yml
index ab54d515..1724248d 100644
--- a/.github/workflows/testsuite.yml
+++ b/.github/workflows/testsuite.yml
@@ -54,13 +54,13 @@ jobs:
             "5.26",
             "5.24",
             "5.22",
-            "5.20",
-            "5.18",
-            "5.16",
-            "5.14",
-            "5.12",
-            "5.10",
-            "5.8",
+            "5.20-buster",
+            "5.18-buster",
+            "5.16-buster",
+            "5.14-buster",
+            "5.12-buster",
+            "5.10-buster",
+            "5.8-buster",
           ]
 
     container: