diff --git a/platformio.ini b/platformio.ini
index e9d1555..81ddad3 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -14,6 +14,7 @@ lib_deps =
 	peterus/esp-logger @ 1.0.0
 	peterus/ESP-FTP-Server-Lib @ 0.9.5
 	knolleary/PubSubClient@^2.8
+	mikalhart/TinyGPSPlus @ 1.0.2
 check_tool = cppcheck
 check_flags =
 	cppcheck: --suppress=*:*.pio\* --inline-suppr -DCPPCHECK --force lib -ilib/TimeLib -ilib/LoRa -ilib/NTPClient