diff --git a/.github/workflows/periodic-merge-24h.yml b/.github/workflows/periodic-merge-24h.yml
index 813d6a988efd..08570d60e1d4 100644
--- a/.github/workflows/periodic-merge-24h.yml
+++ b/.github/workflows/periodic-merge-24h.yml
@@ -35,10 +35,6 @@ jobs:
         pairs:
           - from: master
             into: haskell-updates
-          - from: release-24.05
-            into: staging-next-24.05
-          - from: staging-next-24.05
-            into: staging-24.05
           - from: release-24.11
             into: staging-next-24.11
           - from: staging-next-24.11
diff --git a/lib/trivial.nix b/lib/trivial.nix
index 0e196018961c..d3ed7d9eda9e 100644
--- a/lib/trivial.nix
+++ b/lib/trivial.nix
@@ -416,7 +416,7 @@ in {
   */
   oldestSupportedRelease =
     # Update on master only. Do not backport.
-    2405;
+    2411;
 
   /**
     Whether a feature is supported in all supported releases (at the time of