diff --git a/doc/release-notes/rl-2611.section.md b/doc/release-notes/rl-2611.section.md
index 962a303c1a83..51c0a4e2ccb7 100644
--- a/doc/release-notes/rl-2611.section.md
+++ b/doc/release-notes/rl-2611.section.md
@@ -16,6 +16,11 @@
   +nixpkgs.url = "https://channels.nixos.org/nixos-26.05/nixexprs.tar.zst";
   ```
 
+- Emacs has been updated to 31.1.
+  This introduces some backwards‐incompatible changes; see the NEWS for details.
+  NEWS can be viewed from Emacs by typing `C-h n`, or by clicking `Help->Emacs News` from the menu bar.
+  It can also be browsed [online](https://cgit.git.savannah.gnu.org/cgit/emacs.git/tree/etc/NEWS?h=emacs-31).
+
 - `sing-box` now supports NaïveProxy outbounds.
 
 ## Backward Incompatibilities {#sec-nixpkgs-release-26.11-incompatibilities}
diff --git a/pkgs/applications/editors/emacs/sources.nix b/pkgs/applications/editors/emacs/sources.nix
index 53433ce31e37..16dc4d4cf24f 100644
--- a/pkgs/applications/editors/emacs/sources.nix
+++ b/pkgs/applications/editors/emacs/sources.nix
@@ -107,10 +107,10 @@ in
 {
   emacs31 = import ./make-emacs.nix (mkArgs {
     pname = "emacs";
-    version = "31.1-rc1";
+    version = "31.1";
     variant = "mainline";
-    rev = "emacs-31.1-rc1";
-    hash = "sha256-ZNCYFfMA2f14p57g/LdG6YK7nwUio8fdXmllkChMOSc=";
+    rev = "emacs-31.1";
+    hash = "sha256-lFT5Vt49G17t/fRm5yppO5p9ui10I9JNJVaGO1GPZFI=";
   });
 
   emacs30 = import ./make-emacs.nix (mkArgs {