diff --git a/src/ghes-releases/lib/enterprise-dates.json b/src/ghes-releases/lib/enterprise-dates.json
index 96e9e62f3398..61f6659d96f7 100644
--- a/src/ghes-releases/lib/enterprise-dates.json
+++ b/src/ghes-releases/lib/enterprise-dates.json
@@ -253,9 +253,9 @@
   },
   "3.18": {
     "releaseDate": "2025-09-03",
-    "deprecationDate": "2026-08-25",
+    "deprecationDate": "2026-10-14",
     "releaseCandidateDate": "2025-09-03",
-    "generalAvailabilityDate": "2025-10-06"
+    "generalAvailabilityDate": "2025-10-14"
   },
   "3.19": {
     "releaseDate": "2025-11-11",