diff --git a/variants/thinknode_m1/platformio.ini b/variants/thinknode_m1/platformio.ini
index 590f2100..19bf653f 100644
--- a/variants/thinknode_m1/platformio.ini
+++ b/variants/thinknode_m1/platformio.ini
@@ -92,4 +92,5 @@ lib_deps =
   ${ThinkNode_M1.lib_deps}
   densaugeo/base64 @ ~1.4.0
   zinggjm/GxEPD2 @ 1.6.2
+  bakercp/CRC32 @ ^2.0.0
   end2endzone/NonBlockingRTTTL@^1.3.0