diff --git a/compression/Dockerfile b/compression/Dockerfile
index 4329744..b9855e1 100644
--- a/compression/Dockerfile
+++ b/compression/Dockerfile
@@ -1,19 +1,23 @@
 FROM maven:3.6.0-jdk-11
 WORKDIR /app
 
 # Download webgraph binary
 RUN curl -O http://webgraph.di.unimi.it/webgraph-big-3.5.0-bin.tar.gz
 RUN tar xvfz webgraph-big-3.5.0-bin.tar.gz
 RUN cp webgraph-big-3.5.0/webgraph-big-3.5.0.jar .
 
 # Download webgraph dependencies
 RUN curl -O http://webgraph.di.unimi.it/webgraph-big-deps.tar.gz
 RUN tar xvfz webgraph-big-deps.tar.gz
 
 # Download LAW (for LLP ordering)
 RUN curl -O http://law.di.unimi.it/software/download/law-2.5-bin.tar.gz
 RUN tar xvfz law-2.5-bin.tar.gz
 RUN cp law-2.5/law-2.5.jar .
 
+# Monitoring
+RUN apt-get update
+RUN apt-get install -y time
+
 WORKDIR /graph
 COPY compress_graph.sh .