diff --git a/tests/local-tests/Makefile b/tests/local-tests/Makefile
index 799dc2e..ed81629 100644
--- a/tests/local-tests/Makefile
+++ b/tests/local-tests/Makefile
@@ -2,5 +2,5 @@
 # Makefile to compile and run Arduino programs natively on Linux or MacOS.
 
 APP_NAME := local-tests
-ARDUINO_LIBS := AUnit AceCommon AceTime
+ARDUINO_LIBS := AUnit AceCommon AceTime TinyMqtt
 include ../../../EpoxyDuino/EpoxyDuino.mk