diff --git a/docker/Dockerfile b/docker/Dockerfile
index 33e1593..517e04c 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -20,6 +20,7 @@ RUN unzip master.zip && rm master.zip
 WORKDIR /data
 
 # Execute refine.py
+RUN chmod +x /app/openrefine-client-master/refine.py
 ENTRYPOINT ["/app/openrefine-client-master/refine.py"]
 
 # Default command: print help