diff --git a/CHANGELOG.md b/CHANGELOG.md
index b504b4ab..81dd8409 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,19 @@ way to 1.0.0; see [docs/ROADMAP.md](docs/ROADMAP.md).
 
 ## [Unreleased]
 
+## [1.1.0-beta.8.1] - 2026-11-06
+
+A hotfix for the Forge 26.3 jar, with no other changes. Worlds from 1.1.0-beta.8 load as before, and
+the network protocol is unchanged. Betas are not uploaded to CurseForge.
+
+### Fixed
+
+- Released jars were missing files the game needs, because the list of files allowed into the jar was
+  written by hand and never kept up: the equipment recipes (since 1.1.0-beta.4), the thermal view's
+  post effect and shader (since beta.5), and the smoke particle and the drafting table's recipe, model
+  and block state (since beta.6). Development runs read the source folders, so they hid it. The list now
+  comes from the repository's resource folders.
+
 ## [1.1.0-beta.8] - 2026-11-06
 
 Phase 12 of the road to 1.1.0: the second half of the vehicle workshop. Betas are not uploaded to
@@ -705,6 +718,7 @@ Phase 1: foundation and flyable helicopters.
 - Free look moved from Left Ctrl to Left Alt, because Left Ctrl is now the vanilla sprint key.
 - Roll damping runs per tick instead of per frame, so handling no longer depends on frame rate.
 
+[1.1.0-beta.8.1]: https://github.com/JnH-Projects/MCHeli-Rework-Forge/releases/tag/v1.1.0-beta.8.1
 [1.1.0-beta.8]: https://github.com/JnH-Projects/MCHeli-Rework-Forge/releases/tag/v1.1.0-beta.8
 [1.1.0-beta.7]: https://github.com/JnH-Projects/MCHeli-Rework-Forge/releases/tag/v1.1.0-beta.7
 [1.1.0-beta.6]: https://github.com/JnH-Projects/MCHeli-Rework-Forge/releases/tag/v1.1.0-beta.6
diff --git a/README.md b/README.md
index 716d035f..f7ebf37a 100644
--- a/README.md
+++ b/README.md
@@ -9,7 +9,7 @@ MCHeli Rework is a ground-up port of MCHeli 1.0.3, a mod that stopped at Minecra
 system is rewritten for the modern game, while the original vehicle definitions, models,
 textures and sounds load unchanged.
 
-> **Status:** on the way to 1.1.0, now at phase 12 (`1.1.0-beta.8`). Every helicopter, plane,
+> **Status:** on the way to 1.1.0, now at phase 12 (`1.1.0-beta.8.1`). Every helicopter, plane,
 > tank, car and ground vehicle can be placed, crewed and driven with the original handling, all
 > 229 weapons fire, and the scripted HUDs, fuel, the vehicle screen and all of the original's
 > equipment are in, down to UAV stations, the drafting table and the team manager. The vehicle
diff --git a/docs/DEVELOPMENT.md b/docs/DEVELOPMENT.md
index 0f47e2b3..ce0636b0 100644
--- a/docs/DEVELOPMENT.md
+++ b/docs/DEVELOPMENT.md
@@ -179,17 +179,19 @@ releases page. See [the release channels](ROADMAP.md#release-channels).
 ## Original content
 
 Neither the repository nor the jar may contain EMB4's files. Don't commit anything from the zip
-or from `run/mcheli/imported`. As a guard, the `jar` task excludes everything under
-`assets/mcheli` except `lang`, the four fallback item models of the generic vehicle items and
-the night glow particle (`particles/glow.json`, `textures/particle/glow.png`, both our own).
+or from `run/mcheli/imported`. As a guard, the `jar` task leaves out anything under `assets/mcheli`
+or `data/mcheli/recipe` that the resource folders of `common` and `minecraft-<version>` do not hold,
+such as copies left in the build output by an older build or the IDE. So what is committed there
+ships, and anything added there is ours to redistribute.
+
 After a build, check every jar with:
 
 ```
 for jar in build/release/*.jar; do unzip -l "$jar" | grep -v "com/"; done
 ```
 
-which should list only the manifest, `mods.toml`, `pack.mcmeta`, the two lang files, the four
-generic item models, the glow particle and its texture, and the damage type data.
+which should list only the manifest, the loader's metadata, `pack.mcmeta`, and the files in those
+resource folders.
 
 When the conversion changes, change `content.LegacyImporter` and bump its `FORMAT`, so existing
 installs, the dev run and the tests all convert again. Keys the rework adds go into the lang files
diff --git a/docs/ROADMAP.md b/docs/ROADMAP.md
index 361e0c9b..0e473659 100644
--- a/docs/ROADMAP.md
+++ b/docs/ROADMAP.md
@@ -139,6 +139,7 @@ Rules that hold for every beta:
 | 10 | `1.1.0-beta.6` | The rest of the equipment (Forge 26.3 only) | Released |
 | 11 | `1.1.0-beta.7` | Workshop: model, parts and tuning (Forge 26.3 only) | Released |
 | 12 | `1.1.0-beta.8` | Workshop: textures, sounds and sharing (Forge 26.3 only) | Released |
+| | `1.1.0-beta.8.1` | Hotfix: the files missing from the released jars | Released |
 | 13 | `1.1.0-beta.9` | Every loader on every supported version, 1.19.4 to 26.3 | Planned |
 | | `1.1.0` | Release on CurseForge | Planned |
 
diff --git a/gradle.properties b/gradle.properties
index 9b7d5dc8..0aca9b95 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -13,7 +13,7 @@ net.minecraftforge.gradle.merge-source-sets=true
 mod_id=mcheli
 mod_name=MCHeli Rework
 mod_group=com.jnhprojects.mcheli
-mod_version=1.1.0-beta.8
+mod_version=1.1.0-beta.8.1
 mod_authors=JayMar921 (rework), EMB4 (original author), Fureniku (CurseForge maintainer)
 mod_license=MCHeli Rework Licence 1.0 (see LICENSE)
 
diff --git a/gradle/loader.gradle b/gradle/loader.gradle
index 6159b24b..f79e9b48 100644
--- a/gradle/loader.gradle
+++ b/gradle/loader.gradle
@@ -70,20 +70,27 @@ tasks.named('processResources', ProcessResources) {
     }
 }
 
+// What the repository holds under its resource folders is ours and ships. Worked out from the
+// folders, because a hand-written list misses every file added later and nothing shows it:
+// development runs read the source folders, so only a real jar lacked them (betas 4 to 8 shipped
+// without the equipment recipes, the thermal shader, the smoke particle or the drafting table model).
+def ownResources = [] as Set<String>
+if (!scaffold) {
+    [project(':common').file('src/main/resources'),
+     rootProject.file("minecraft-${minecraft_version}/src/main/resources")].each { root ->
+        fileTree(root).visit { if (!it.directory) ownResources << it.relativePath.pathString }
+    }
+}
+
 tasks.named('jar', Jar) {
     // EMB4's content is never redistributed: players import it from their own copy of the original
     // zip (LegacyContent). The repository no longer holds it, but the jar is packed from the
     // resource output, which can still have copies from older builds and from the IDE.
-    def shipped = ['assets/mcheli/items/helicopter.json', 'assets/mcheli/items/plane.json',
-                   'assets/mcheli/items/tank.json', 'assets/mcheli/items/vehicle.json',
-                   // Our own: the night glow sprite (generated, no EMB4 content) and its particle definition.
-                   'assets/mcheli/particles/glow.json', 'assets/mcheli/textures/particle/glow.png']
     exclude { FileTreeElement element ->
         String path = element.relativePath.pathString
-        !element.directory && path.startsWith('assets/mcheli/') && !path.startsWith('assets/mcheli/lang/') &&
-                !shipped.contains(path)
+        !element.directory && (path.startsWith('assets/mcheli/') || path.startsWith('data/mcheli/recipe/')) &&
+                !ownResources.contains(path)
     }
-    exclude 'data/mcheli/recipe/**'
     includeEmptyDirs = false
     // The licence travels with every copy of the jar.
     from(rootProject.file('LICENSE'))