diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 630ac96..d8e1c1d 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -19,6 +19,7 @@ pio_build:
   
   before_script:
     - pip install -U platformio
+    - pio lib install --global "ThrowTheSwitch/Unity@^2.6.0"
     
   script:
     - "pio run -e $ARDUINO_ENV"