diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index d2b7a3c..2fb723a 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,5 +1,5 @@
 default:
-  image: python:3.11
+  image: python:3.12-slim-bookworm
 
 variables:
   PIP_CACHE_DIR: "$CI_PROJECT_DIR/.cache/pip"
@@ -14,8 +14,8 @@
   - python -m venv venv
   - source venv/bin/activate
   - export PYTHONPATH=PYTHONPATH:.
-  - cp $(find / -name  longintrepr.h) /usr/local/include/python3.11/
-  - pip install --use-pep517 -r requirements.txt
+  - venv/bin/pip install --upgrade pip
+  - pip install -r requirements.txt
   - python -m spacy download de_core_news_lg
   - apt update -y
   - apt-get install cpanminus -y
diff --git a/Dockerfile b/Dockerfile
index 00bea0d..cde20de 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,11 +1,12 @@
-# Use the official Python 3.11 image
-FROM python:3.11-slim-bookworm
+# Use the official Python 3.12 image
+FROM python:3.12-slim-bookworm
 
 # Set environment variables
 ENV PIP_CACHE_DIR="/app/.cache/pip" \
     PYTHONPATH="PYTHONPATH:."
 ENV VIRTUAL_ENV=/app/venv
 ENV PATH="$VIRTUAL_ENV/bin:$PATH"
+ENV MAKEFLAGS="-j$(nproc)"
 
 # Set the working directory
 COPY lib /app/lib
@@ -17,8 +18,8 @@
 # Install Python dependencies and create a virtual environment
 RUN mkdir -p "/app/logs"
 RUN python -m venv venv
-RUN cp $(find / -name longintrepr.h) /usr/local/include/python3.11/
-RUN venv/bin/pip install --use-pep517 -r requirements.txt
+RUN venv/bin/pip install --upgrade pip
+RUN venv/bin/pip install -r requirements.txt
 RUN . venv/bin/activate && python -m spacy download de_core_news_lg
 
 # Define the entry point
diff --git a/README.md b/README.md
index 04c15c9..389c785 100644
--- a/README.md
+++ b/README.md
@@ -3,39 +3,40 @@
 ## Build and run as a Docker Image
 
 ```shell
-docker build -t conllu2spacy .
+docker build -t -t korap/conllu2spacy:latest .
 ```
 
 Then run the image for example with:
 
 ```shell
-korapxml2conllu rei.zip | docker run -i conllu2spacy | conllu2korapxml > rei.spacy.zip
+korapxml2conllu rei.zip | docker run -i korap/conllu2spacy | conllu2korapxml > rei.spacy.zip
 ```
 
 
 ## Build locally and install Requirements
 
 ### Create a Virtual Environment
-```
-	python3 -m venv venv
-	source venv/bin/activate
-	export PYTHONPATH=PYTHONPATH:.
+
+```shell
+python3 -m venv venv
+source venv/bin/activate
+export PYTHONPATH=PYTHONPATH:.
 ```
 
 ### Install Libraries (as needed)
 
-#### SpaCy 2.x
+#### SpaCy
 
 ```
 pip install -U pip setuptools wheel
-pip install -U spacy==2.3.2
+pip install -U spacy
 ```
 
 For more details you can visit the [official website](https://spacy.io/usage#quickstart)
 
 #### Germalemma
 
-```
+```shell
 pip install -U germalemma
 ```
 
diff --git a/requirements.txt b/requirements.txt
index 4e3502d..46c867c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 pip
 wheel
 thinc
-spacy==2.3.9
+spacy
 germalemma