diff --git a/ci/integration-tests.sh b/ci/integration-tests.sh
index 859ffee9f3..88366cee33 100755
--- a/ci/integration-tests.sh
+++ b/ci/integration-tests.sh
@@ -7,6 +7,7 @@ FEATURES="$1"
 cd "$(dirname "$0")/.."
 source ci/_
 export RUST_BACKTRACE=1
+scripts/ulimit-n.sh
 
 for test in {,*/}tests/*.rs; do
   test=${test##*/} # basename x