diff --git a/Dockerfile b/Dockerfile
index 0c85f7a..367917c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -3,6 +3,7 @@ MAINTAINER yohan <783b8c87@scimetis.net>
 ENV DEBIAN_FRONTEND noninteractive
 ENV TZ Europe/Paris
 RUN apt-get update && apt-get -y install python-pip python-mysqldb python-yaml
+RUN pip install pyrsistent==0.16.0
 RUN pip install "jsonschema<4.0"
 RUN pip install flask-restx==1.3.0
 RUN pip install flask-sqlalchemy