diff --git a/UNDF-REGISTRY.json b/UNDF-REGISTRY.json
index 841b4552e..ea0215c81 100644
--- a/UNDF-REGISTRY.json
+++ b/UNDF-REGISTRY.json
@@ -810,5 +810,6 @@
   "vscode-0003": "UNDF-2026-000000809",
   "vscode-0004": "UNDF-2026-000000810",
   "zed-0001": "UNDF-2026-000000811",
-  "zed-0002": "UNDF-2026-000000812"
+  "zed-0002": "UNDF-2026-000000812",
+  "neovim-0001": "UNDF-2026-000000813"
 }
diff --git a/defects/neovim/patch/neovim-0001-ins-compl-add-duplicate-check.patch b/defects/neovim/patch/neovim-0001-ins-compl-add-duplicate-check.patch
index 2d9cb099b..368ea65f2 100644
--- a/defects/neovim/patch/neovim-0001-ins-compl-add-duplicate-check.patch
+++ b/defects/neovim/patch/neovim-0001-ins-compl-add-duplicate-check.patch
@@ -1,3 +1,4 @@
+# UNDF: UNDF-2026-000000813
 # UNDF: (leave blank)
 # Neovim CWE-407: ins_compl_add() O(N^2) duplicate completion check
 #