diff --git a/platformio.ini b/platformio.ini
index e718535..46c31c7 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -9,7 +9,7 @@
 ; https://docs.platformio.org/page/projectconf.html
 
 [common_env_data]
-src_filter = "+<*> -<.git/> -<.svn/> -<platform/> -<inputs/> +<inputs/BPM.cpp>"
+src_filter = "+<*> -<.git/> -<.svn/> -<platform/> -<inputs/> +<inputs/BPM.cpp> +<inputs/Serial.cpp> +<inputs/CircadianRhythm.cpp>"
 lib_ldf_mode = chain+
 extra_scripts = verify-configs.py
 src_build_flags =