diff --git a/src/Makefile b/src/Makefile
index dba57f7..51d0901 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -11,7 +11,7 @@ VERSION:=$(shell cat VERSION)
 .PHONY: all
 all:	counter
 
-counter:	counter.o LS7366R.o ringbuffer.o led.o logging.o sinkSender.o version.o
+counter:	counter.o LS7366R.o ringbuffer.o led.o logging.o sinkSender.o sha256.o version.o
 	$(CC) -o $@ $(LDFLAGS) $^
 
 version.o:	version.c VERSION