diff --git a/ci/do_ci.sh b/ci/do_ci.sh
index 2e581ea316..6dba3e384d 100755
--- a/ci/do_ci.sh
+++ b/ci/do_ci.sh
@@ -27,6 +27,8 @@ BAZEL_OPTIONS=""
 BAZEL_TEST_OPTIONS="$BAZEL_OPTIONS --test_output=errors"
 BAZEL_STARTUP_OPTIONS="--output_user_root=$HOME/.cache/bazel"
 
+export CTEST_OUTPUT_ON_FAILURE=1
+
 if [[ "$1" == "cmake.test" ]]; then
   install_prometheus_cpp_client
   cd "${BUILD_DIR}"