diff --git a/doc/redirects.json b/doc/redirects.json
index e29cb93697f9..ddf3626bbd34 100644
--- a/doc/redirects.json
+++ b/doc/redirects.json
@@ -86,6 +86,9 @@
     "index.html#building-a-titanium-app",
     "index.html#emulating-or-simulating-the-app"
   ],
+  "sec-nixpkgs-release-25.05-incompatibilities-nexusmods-app-upgraded": [
+    "release-notes.html#sec-nixpkgs-release-25.05-incompatibilities-nexusmods-app-upgraded"
+  ],
   "sec-nixpkgs-release-25.05-lib": [
     "release-notes.html#sec-nixpkgs-release-25.05-lib"
   ],
diff --git a/doc/release-notes/rl-2505.section.md b/doc/release-notes/rl-2505.section.md
index 9c3a264db53e..6e5ad92b4240 100644
--- a/doc/release-notes/rl-2505.section.md
+++ b/doc/release-notes/rl-2505.section.md
@@ -18,6 +18,16 @@
 
 - `titaniumenv`, `titanium`, and `titanium-alloy` have been removed due to lack of maintenance in Nixpkgs.
 
+### NexusMods.App upgraded {#sec-nixpkgs-release-25.05-incompatibilities-nexusmods-app-upgraded}
+
+- `nexusmods-app` has been upgraded from version 0.6.3 to 0.7.3.
+
+  - Before upgrading, you **must reset all app state** (mods, games, settings, etc). NexusMods.App will crash if any state from a version older than 0.7.0 is still present.
+
+  - Typically, you can can reset to a clean state by running `NexusMods.App uninstall-app`. See Nexus Mod's [how to uninstall the app](https://nexus-mods.github.io/NexusMods.App/users/Uninstall) documentation for more detail and alternative methods.
+
+  - This should not be necessary going forward, because loading app state from 0.7.0 or newer is now supported. This is documented in the [0.7.1 changelog](https://github.com/Nexus-Mods/NexusMods.App/releases/tag/v0.7.1).
+
 ## Nixpkgs Library {#sec-nixpkgs-release-25.05-lib}
 
 ### Breaking changes {#sec-nixpkgs-release-25.05-lib-breaking}
diff --git a/nixos/doc/manual/redirects.json b/nixos/doc/manual/redirects.json
index a103e8bd5cff..e8eb5a3058f7 100644
--- a/nixos/doc/manual/redirects.json
+++ b/nixos/doc/manual/redirects.json
@@ -1922,6 +1922,9 @@
     "index.html#building-a-titanium-app",
     "index.html#emulating-or-simulating-the-app"
   ],
+  "sec-nixpkgs-release-25.05-incompatibilities-nexusmods-app-upgraded": [
+    "release-notes.html#sec-nixpkgs-release-25.05-incompatibilities-nexusmods-app-upgraded"
+  ],
   "sec-nixpkgs-release-25.05-lib": [
     "release-notes.html#sec-nixpkgs-release-25.05-lib"
   ],