diff --git a/.gitlab/ci/build.gitlab-ci.yml b/.gitlab/ci/build.gitlab-ci.yml
index 8bcbe5c125ac50b5b378c4300dac14f84b9f6e2e..009a40cebef27111c47ec84eda148e0510a4da5f 100644
--- a/.gitlab/ci/build.gitlab-ci.yml
+++ b/.gitlab/ci/build.gitlab-ci.yml
@@ -29,6 +29,9 @@ build:ubuntu_cpp:
     paths:
       - build_cpp/
       - install_cpp/
+  variables:
+    CI_DEBUG_TRACE: "true"
+
 
 build:ubuntu_python:
   stage: build