diff --git a/architecture-docs/architecture.uml b/architecture-docs/architecture.puml
similarity index 100%
rename from architecture-docs/architecture.uml
rename to architecture-docs/architecture.puml
diff --git a/planning/gantt.uml b/planning/gantt.puml
similarity index 100%
rename from planning/gantt.uml
rename to planning/gantt.puml