diff --git a/Dockerfile b/Dockerfile
index 833fcc3..851fcef 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,3 @@
-
 FROM python:3.11-slim
 
 WORKDIR /app
@@ -6,6 +5,8 @@ WORKDIR /app
 # Install system dependencies
 RUN apt-get update && apt-get install -y \
     curl \
+    libgl1 \
+    libglib2.0-0 \
     && rm -rf /var/lib/apt/lists/*
 
 # Copy and install Python dependencies
@@ -19,4 +20,4 @@ COPY . .
 ENV PYTHONPATH=/app/src
 
 # Keep container running for interactive use
-CMD ["tail", "-f", "/dev/null"]
+CMD ["tail", "-f", "/dev/null"]
\ No newline at end of file
diff --git a/README.md b/README.md
index 42862e3..b516e22 100644
--- a/README.md
+++ b/README.md
@@ -55,3 +55,5 @@ __Contributors:__
 - Vincent Harkins (@vharkins1)
 - Marc Vergés (@marcvergees) 
 - Jan Sans
+
+.
\ No newline at end of file
diff --git a/src/main.py b/src/main.py
index 5bb632b..a17ecb1 100644
--- a/src/main.py
+++ b/src/main.py
@@ -1,4 +1,5 @@
 import os
+from typing import Union
 # from backend import Fill  
 from commonforms import prepare_form 
 from pypdf import PdfReader