diff --git a/concordia-preprocessor/Dockerfile b/concordia-preprocessor/Dockerfile
index 1f25aff..1de911e 100644
--- a/concordia-preprocessor/Dockerfile
+++ b/concordia-preprocessor/Dockerfile
@@ -9,8 +9,7 @@ ENV LANGUAGE pl_PL:pl
 ENV LC_ALL pl_PL.UTF-8   
 
 RUN apt-get install -y git python3 python3-pip
-RUN pip3 install flask flask_restful gunicorn requests spacy
-RUN python3 -m spacy download en
+RUN pip3 install flask flask_restful gunicorn requests nltk
 
 RUN git clone https://git.wmi.amu.edu.pl/rjawor/concordia-preprocessor.git
 RUN cd /concordia-preprocessor/dictionaries && ./generate_dict.py