diff --git a/docs/lazy-adr/adr-006-da-interface.md b/docs/lazy-adr/adr-006-da-interface.md
index e95d30baba..99007e77d2 100644
--- a/docs/lazy-adr/adr-006-da-interface.md
+++ b/docs/lazy-adr/adr-006-da-interface.md
@@ -1,4 +1,4 @@
-# ADR 005: Data Availability Client Interface
+# ADR 006: Data Availability Client Interface
 
 ## Changelog