diff --git a/principles/all.yml b/principles/all.yml
index e39c7cd2f..fe50b0ca3 100644
--- a/principles/all.yml
+++ b/principles/all.yml
@@ -44,6 +44,9 @@ principles:
 - id: fp-016-maintenance
   layout: principle
   title: Maintenance (principle 16)
+- id: fp-019-term-stability
+  layout: principle
+  title: Stability (principle 19)
 - id: fp-020-responsiveness
   layout: principle
   title: Responsiveness (principle 20)