diff --git a/UNDF-REGISTRY.json b/UNDF-REGISTRY.json
index 767a93ee9..9727edc5c 100644
--- a/UNDF-REGISTRY.json
+++ b/UNDF-REGISTRY.json
@@ -890,5 +890,7 @@
   "thunderbird-0003-0003": "UNDF-2026-000000889",
   "thunderbird-0004-0004": "UNDF-2026-000000890",
   "thunderbird-0005-0005": "UNDF-2026-000000891",
-  "thunderbird-0006-0006": "UNDF-2026-000000892"
+  "thunderbird-0006-0006": "UNDF-2026-000000892",
+  "proton-0001": "UNDF-2026-000000893",
+  "proton-0002": "UNDF-2026-000000894"
 }
diff --git a/defects/proton/patch/proton-0001-find_iface_constructor-linear-strcmp-scan.patch b/defects/proton/patch/proton-0001-find_iface_constructor-linear-strcmp-scan.patch
index 5ef15f714..7ecf7b02b 100644
--- a/defects/proton/patch/proton-0001-find_iface_constructor-linear-strcmp-scan.patch
+++ b/defects/proton/patch/proton-0001-find_iface_constructor-linear-strcmp-scan.patch
@@ -1,3 +1,4 @@
+# UNDF: UNDF-2026-000000893
 # proton-0001: find_iface_constructor linear strcmp scan O(C) per lookup
 #
 # File: lsteamclient/steamclient_generated.c
diff --git a/defects/proton/patch/proton-0002-merge_user_dir-extant_dirs-list-explosion.patch b/defects/proton/patch/proton-0002-merge_user_dir-extant_dirs-list-explosion.patch
index 308da6dd8..834c7ed45 100644
--- a/defects/proton/patch/proton-0002-merge_user_dir-extant_dirs-list-explosion.patch
+++ b/defects/proton/patch/proton-0002-merge_user_dir-extant_dirs-list-explosion.patch
@@ -1,3 +1,4 @@
+# UNDF: UNDF-2026-000000894
 # proton-0002: merge_user_dir extant_dirs list explosion O(D×P)
 #
 # File: proton (Python launch script)