diff --git a/.gitlab/rel_eng/mk-ghcup-metadata/mk_ghcup_metadata.py b/.gitlab/rel_eng/mk-ghcup-metadata/mk_ghcup_metadata.py
index 75ccb62648823bb4bc5dcff23fef7492c8a36300..7cdf4aec53503c1c207ce24e75887002a5e9c8d7 100755
--- a/.gitlab/rel_eng/mk-ghcup-metadata/mk_ghcup_metadata.py
+++ b/.gitlab/rel_eng/mk-ghcup-metadata/mk_ghcup_metadata.py
@@ -217,7 +217,7 @@ def mk_new_yaml(release_mode, version, date, pipeline_type, job_map):
     a64 = { "Linux_Debian": { "< 10": deb9
                            , "( >= 10 && < 11 )": deb10
                            , "( >= 11 && < 12 )": deb11
-                           , ">= 11": deb12
+                           , ">= 12": deb12
                            , "unknown_versioning": deb11 }
           , "Linux_Ubuntu" : { "unknown_versioning": ubuntu2004
                              , "( >= 16 && < 18 )": deb9