diff --git a/.github/workflows/release_plugin.yml b/.github/workflows/release_plugin.yml
index 10184c3..bf4d8fa 100644
--- a/.github/workflows/release_plugin.yml
+++ b/.github/workflows/release_plugin.yml
@@ -11,7 +11,7 @@ jobs:
     steps:
       # 1. Stáhne kód z repozitáře
       - name: Checkout code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       # 2. Vytvoří ZIP (předpokládá, že kód je ve složce 'amcr_viewer')
       - name: Zip Plugin
@@ -22,7 +22,7 @@ jobs:
 
       # 3. Nahraje ZIP k Releasu
       - name: Upload Release Asset
-        uses: softprops/action-gh-release@v1
+        uses: softprops/action-gh-release@v2
         if: startsWith(github.ref, 'refs/tags/')
         with:
           files: amcr_viewer.zip
diff --git a/README.md b/README.md
index f5477c3..a037274 100644
--- a/README.md
+++ b/README.md
@@ -131,6 +131,8 @@ Layers are only created if the query returns features of the corresponding geome
 
 The plugin is developed in **Python 3** using the **PyQt6** framework for the GUI and the **Requests** library for HTTP communication.
 
+> **Note:** The `requests` library is bundled with the QGIS installers for Windows and macOS. On Linux (distribution packages), it may need to be installed separately (e.g. `python3-requests`).
+
 ### 4.1 File Structure
 
 * `amcr_viewer.py`: Entry point; handles GUI integration, toolbar/menu setup, and login flow.
diff --git a/amcr_viewer/metadata.txt b/amcr_viewer/metadata.txt
index 8343be2..124778e 100644
--- a/amcr_viewer/metadata.txt
+++ b/amcr_viewer/metadata.txt
@@ -47,7 +47,7 @@ tags=python,AMCR,AIS CR,archaeology,PIAN,AMČR,archeologie
 
 homepage=https://amcr-help.aiscr.cz/digiarchiv/qgis-viewer.html
 category=Vector
-icon=download.png
+icon=akce.png
 # experimental flag
 experimental=False