diff --git a/.github/workflows/upmerge_pr.yaml b/.github/workflows/upmerge_pr.yaml
new file mode 100644
index 00000000..f7082033
--- /dev/null
+++ b/.github/workflows/upmerge_pr.yaml
@@ -0,0 +1,63 @@
+name: Upmerge PR
+
+on:
+    schedule:
+        -
+            cron: "0 2 * * *"
+    workflow_dispatch: ~
+
+permissions:
+    contents: write
+    pull-requests: write
+
+jobs:
+    upmerge:
+        runs-on: ubuntu-latest
+        if: github.repository == 'Sylius/InvoicingPlugin'
+        name: "Upmerge PR"
+        timeout-minutes: 5
+        strategy:
+            fail-fast: false
+            matrix:
+                include:
+                    -
+                        base_branch: "1.0"
+                        target_branch: "2.0"
+
+        steps:
+            -
+                uses: actions/checkout@v4
+                with:
+                    ref: ${{ matrix.target_branch }}
+
+            -
+                name: Reset upmerge branch
+                run: |
+                    git fetch origin ${{ matrix.base_branch }}:${{ matrix.base_branch }}
+                    git reset --hard ${{ matrix.base_branch }}
+
+            -
+                name: Create Pull Request
+                uses: peter-evans/create-pull-request@v4
+                with:
+                    token: ${{ secrets.SYLIUS_BOT_PAT }}
+                    title: '[UPMERGE] ${{ matrix.base_branch }} -> ${{ matrix.target_branch }}'
+                    body: |
+                        This PR has been generated automatically.
+                        For more details see [upmerge_pr.yaml](/Sylius/InvoicingPlugin/blob/1.0/.github/workflows/upmerge_pr.yaml).
+                        
+                        **Remember!** The upmerge should always be merged with using `Merge pull request` button.
+                        
+                        In case of conflicts, please resolve them manually with usign the following commands:
+                        ```
+                        git fetch upstream
+                        gh pr checkout <this-pr-number>
+                        git merge upstream/${{ matrix.target_branch }} -m "Resolve conflicts between ${{ matrix.base_branch }} and ${{ matrix.target_branch }}"
+                        ```
+                        
+                        If you use other name for the upstream remote, please replace `upstream` with the name of your remote pointing to the `Sylius/InvoicingPlugin` repository.
+                        
+                        Once the conflicts are resolved, please run `git merge --continue` and push the changes to this PR.
+                    branch: "upmerge/${{ matrix.base_branch }}_${{ matrix.target_branch }}"
+                    delete-branch: true
+                    base: ${{ matrix.target_branch }}
diff --git a/tests/Application/config/routes/sylius_invoicing_plugin.yaml b/config/routes.yaml
similarity index 54%
rename from tests/Application/config/routes/sylius_invoicing_plugin.yaml
rename to config/routes.yaml
index 44b42e1c..fd8b5240 100644
--- a/tests/Application/config/routes/sylius_invoicing_plugin.yaml
+++ b/config/routes.yaml
@@ -1,9 +1,9 @@
 sylius_invoicing_admin:
-    resource: "@SyliusInvoicingPlugin/config/admin_routes.yaml"
+    resource: "@SyliusInvoicingPlugin/config/routes/admin.yaml"
     prefix: /admin
 
 sylius_invoicing_shop:
-    resource: "@SyliusInvoicingPlugin/config/shop_routes.yaml"
+    resource: "@SyliusInvoicingPlugin/config/routes/shop.yaml"
     prefix: /{_locale}
     requirements:
         _locale: ^[a-z]{2}(?:_[A-Z]{2})?$
diff --git a/config/admin_routes.yaml b/config/routes/admin.yaml
similarity index 100%
rename from config/admin_routes.yaml
rename to config/routes/admin.yaml
diff --git a/config/shop_routes.yaml b/config/routes/shop.yaml
similarity index 100%
rename from config/shop_routes.yaml
rename to config/routes/shop.yaml
diff --git a/docs/legacy_installation.md b/docs/legacy_installation.md
index a71370d1..44171663 100644
--- a/docs/legacy_installation.md
+++ b/docs/legacy_installation.md
@@ -22,18 +22,11 @@
         - { resource: '@SyliusInvoicingPlugin/config/config.yaml' }
     ```
 
-1. Import routing:
+1. Import routes:
 
     ```yaml
-    sylius_invoicing_admin:
-        resource: '@SyliusInvoicingPlugin/config/admin_routes.yaml'
-        prefix: '/%sylius_admin.path_name%'
-    
-    sylius_invoicing_shop:
-        resource: '@SyliusInvoicingPlugin/config/shop_routes.yaml'
-        prefix: /{_locale}
-        requirements:
-            _locale: ^[a-z]{2}(?:_[A-Z]{2})?$
+    sylius_refund:
+        resource: "@SyliusInvoicingPlugin/config/routes.yaml"
     ```
 
 1. Check if you have `wkhtmltopdf` binary. If not, you can download it [here](https://wkhtmltopdf.org/downloads.html).
diff --git a/src/SyliusInvoicingPlugin.php b/src/SyliusInvoicingPlugin.php
index 603ab19e..63ff7b63 100644
--- a/src/SyliusInvoicingPlugin.php
+++ b/src/SyliusInvoicingPlugin.php
@@ -16,7 +16,6 @@
 use Sylius\Bundle\CoreBundle\Application\SyliusPluginTrait;
 use Symfony\Component\HttpKernel\Bundle\Bundle;
 
-/** @internal */
 final class SyliusInvoicingPlugin extends Bundle
 {
     use SyliusPluginTrait;
diff --git a/tests/Application/config/packages/sylius_invoicing.yaml b/tests/Application/config/packages/sylius_invoicing.yaml
deleted file mode 100644
index 93b2ba94..00000000
--- a/tests/Application/config/packages/sylius_invoicing.yaml
+++ /dev/null
@@ -1,2 +0,0 @@
-imports:
-    - { resource: "@SyliusInvoicingPlugin/config/config.yaml" }
diff --git a/tests/Application/config/routes.yaml b/tests/Application/config/routes.yaml
index e69de29b..912e9ac3 100644
--- a/tests/Application/config/routes.yaml
+++ b/tests/Application/config/routes.yaml
@@ -0,0 +1,2 @@
+sylius_invoicing:
+    resource: "@SyliusInvoicingPlugin/config/routes.yaml"