diff --git a/mkdocs-project-dir/docs/Software_Guides/Singularity.md b/mkdocs-project-dir/docs/Software_Guides/Singularity.md
index 3c7b6f4c6..2b83a66ad 100644
--- a/mkdocs-project-dir/docs/Software_Guides/Singularity.md
+++ b/mkdocs-project-dir/docs/Software_Guides/Singularity.md
@@ -210,7 +210,7 @@ or you can pass it in with the `–-bind=$HOME/.Xauthority` option to `singulari
 
 ## Building containers with Apptainer
 
-!!! important "Singularity update to Apptainer" 
+!!! important "Requires Apptainer" 
     This requires Apptainer and will not work in clusters which still use Singularity.