diff --git a/nixos/doc/manual/release-notes/rl-2505.section.md b/nixos/doc/manual/release-notes/rl-2505.section.md
index da6b49ab689a..0786fbbdb1e2 100644
--- a/nixos/doc/manual/release-notes/rl-2505.section.md
+++ b/nixos/doc/manual/release-notes/rl-2505.section.md
@@ -259,6 +259,9 @@
 - The `gotenberg` package has been updated to 8.16.0, which brings breaking changes to the configuration from version 8.13.0. See the [upstream release notes](https://github.com/gotenberg/gotenberg/releases/tag/v8.13.0)
   for that release to get all the details. The `services.gotenberg` module has been updated appropriately to ensure your configuration is valid with this new release.
 
+- `varnish` was updated from 7.5.0 to 7.7.0, see [Varnish 7.6.0 upgrade guide](https://varnish-cache.org/docs/7.6/whats-new/upgrading-7.6.html) and
+[Varnish 7.7.0 upgrade guide](https://varnish-cache.org/docs/7.7/whats-new/upgrading-7.7.html#whatsnew-upgrading-7-7).
+
 - `asusd` has been upgraded to version 6 which supports multiple aura devices. To account for this, the single `auraConfig` configuration option has been replaced with `auraConfigs` which is an attribute set of config options per each device. The config files may also be now specified as either source files or text strings; to account for this you will need to specify that `text` is used for your existing configs, e.g.:
   ```diff
   -services.asusd.asusdConfig = '''file contents'''
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 2c52cf6f9efd..b47b29a30402 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -5615,7 +5615,7 @@ with pkgs;
     varnish76Packages
     varnish77Packages
     ;
-  varnishPackages = varnish75Packages;
+  varnishPackages = varnish77Packages;
   varnish = varnishPackages.varnish;
 
   viceroy = callPackage ../development/tools/viceroy {