diff --git a/.github/workflows/periodic-merge-24h.yml b/.github/workflows/periodic-merge-24h.yml
index dd0c1a2333003..abfb51244fd66 100644
--- a/.github/workflows/periodic-merge-24h.yml
+++ b/.github/workflows/periodic-merge-24h.yml
@@ -34,10 +34,6 @@ jobs:
         pairs:
           - from: master
             into: haskell-updates
-          - from: release-22.11
-            into: staging-next-22.11
-          - from: staging-next-22.11
-            into: staging-22.11
           - from: release-23.05
             into: staging-next-23.05
           - from: staging-next-23.05
diff --git a/lib/trivial.nix b/lib/trivial.nix
index 26e4b32400f24..34c100959e6ff 100644
--- a/lib/trivial.nix
+++ b/lib/trivial.nix
@@ -179,7 +179,7 @@ rec {
      they take effect as soon as the oldest release reaches end of life. */
   oldestSupportedRelease =
     # Update on master only. Do not backport.
-    2211;
+    2305;
 
   /* Whether a feature is supported in all supported releases (at the time of
      release branch-off, if applicable). See `oldestSupportedRelease`. */