diff --git a/ci/test/04_install.sh b/ci/test/04_install.sh
index ce41c37b6e9..5055a720964 100755
--- a/ci/test/04_install.sh
+++ b/ci/test/04_install.sh
@@ -72,6 +72,8 @@ if [ "$TRAVIS_OS_NAME" == "osx" ]; then
 else
   DOCKER_EXEC free -m -h
   DOCKER_EXEC echo "Number of CPUs \(nproc\):" \$\(nproc\)
+  DOCKER_EXEC echo "Free disk space:"
+  DOCKER_EXEC df -h
 fi
 
 if [ -n "$DPKG_ADD_ARCH" ]; then