diff --git a/.github/workflows/macos.yml b/.github/workflows/macos.yml
index 63e903d5..cec31c61 100644
--- a/.github/workflows/macos.yml
+++ b/.github/workflows/macos.yml
@@ -15,7 +15,7 @@ jobs:
         os:
           - macos-13
           - macos-12
-          - macos-11
+          #- macos-11 // Runner not online
 # eventually build for other alg sets, if CCI use is discontinued
         params:
           - oqsconfig: -DOQS_ALGS_ENABLED=STD