diff --git a/process/sandbox.md b/process/sandbox.md
index b1c901239..90ef9617e 100644
--- a/process/sandbox.md
+++ b/process/sandbox.md
@@ -33,7 +33,7 @@ End users should treat early stage projects with care.  It is expected that some
 
 There are several possible next steps for a project in Sandbox:
 
-* If it achieves sufficient momentum and maturity it can [apply for Incubation status](https://github.com/cncf/toc/blob/master/process/project_proposals.adoc#incubation-process) 
+* If it achieves sufficient momentum and maturity it can [apply for Incubation status](https://github.com/cncf/toc/blob/main/process/project_proposals.md#incubation-process)
 * Based on alignment with another project, it might make sense to merge with or become part of another project within the CNCF. This would be done based on a consensus between project maintainers and the TOC that this is best for both projects.  
 * Some projects and experiments may fail, or otherwise reach a state where they should be moved into the [Archive](https://github.com/cncf/toc/blob/master/process/archiving.md)