diff --git a/.gitea/workflows/build.yml b/.gitea/workflows/build.yml
index d58faaf..44e36fb 100644
--- a/.gitea/workflows/build.yml
+++ b/.gitea/workflows/build.yml
@@ -33,7 +33,9 @@ jobs:
       - name: Проверка закреплённого checkout
         run: python3 -m unittest discover -s tools -p test_engine_checkout.py
       - name: Проверка generated assets
-        run: python3 tools/gen_models.py --check
+        run: |
+          python3 -m pip install --user -r tools/requirements.txt
+          python3 tools/gen_models.py --check
       - name: Тесты ядра без SDK
         working-directory: airdef-core
         run: |
diff --git a/docs/REPO-MAP.md b/docs/REPO-MAP.md
index 6063ac8..0aad128 100644
--- a/docs/REPO-MAP.md
+++ b/docs/REPO-MAP.md
@@ -30,6 +30,7 @@
 
 Команды:
 
+- `python3 -m pip install -r tools/requirements.txt` — зависимости генератора (закреплён Pillow).
 - `python3 tools/gen_models.py` — перегенерировать.
 - `python3 tools/gen_models.py --check` — только сравнить, выход 1 при различиях.
 
diff --git a/tools/requirements.txt b/tools/requirements.txt
new file mode 100644
index 0000000..9ab3157
--- /dev/null
+++ b/tools/requirements.txt
@@ -0,0 +1,2 @@
+# Pin the raster encoder used by generated-manifest.txt.
+Pillow==11.3.0