diff --git a/lib/lib.mk b/lib/lib.mk
index 5faf88335bc6aba950d43295ca6e80ade9c8a3e0..1467cf3e81b8520c90b11d4d5a0d6ff924dc4f6f 100644
--- a/lib/lib.mk
+++ b/lib/lib.mk
@@ -1,6 +1,7 @@
 ccan_EMBED := \
 	contrib/ccan/ilog/ilog.c \
 	contrib/ccan/isaac/isaac.c \
+	contrib/ccan/json/json.c \
 	contrib/ucw/mempool.c \
 	contrib/murmurhash3/murmurhash3.c