diff --git a/ci/images/setup.sh b/ci/images/setup.sh
index 60545e6..e2937bc 100755
--- a/ci/images/setup.sh
+++ b/ci/images/setup.sh
@@ -28,6 +28,7 @@ cd /opt/crac-jdk
 curl -L ${CRAC_JDK_URL} | tar zx --strip-components=1
 test -f /opt/crac-jdk/bin/java
 test -f /opt/crac-jdk/bin/javac
+echo 'ulimit -n 1024' >> /root/.bashrc
 
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 # DOCKER