diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 7d991f8..e62e9ac 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -11,7 +11,7 @@ build:
         variables:
                 GIT_SUBMODULE_STRATEGY: recursive
         script:
-                - env ARDUINO_SKETCHBOOK_DIR=$CI_PROJECT_DIR arduino-cli compile --fqbn=esp8266:esp8266:nodemcu $CI_PROJECT_DIR/sketch
+                - env ARDUINO_SKETCHBOOK_DIR=$CI_PROJECT_DIR arduino-cli compile --debug --fqbn=esp8266:esp8266:nodemcu $CI_PROJECT_DIR/sketch