diff --git a/Makefile b/Makefile
index 97983e6a8..fd6c8aa7a 100644
--- a/Makefile
+++ b/Makefile
@@ -1156,6 +1156,9 @@ ccan-rune-rune.o: $(CCANDIR)/ccan/rune/rune.c
 ccan-rune-coding.o: $(CCANDIR)/ccan/rune/coding.c
 	@$(call VERBOSE, "cc $<", $(CC) $(CFLAGS) -c -o $@ $<)
 
+canned-gossmap: devtools/gossmap-compress
+	DATE=`date +%Y-%m-%d` && devtools/gossmap-compress compress --output-node-map /tmp/gossip_store tests/data/gossip-store-$$DATE.compressed > tests/data/gossip-store-$$DATE-node-map && xz -9 tests/data/gossip-store-$$DATE-node-map && ls -l tests/data/gossip-store-$$DATE*
+
 print-binary-sizes: $(ALL_PROGRAMS) $(ALL_TEST_PROGRAMS) $(BIN_PROGRAMS)
 	@echo User programs:
 	@size -t $(PKGLIBEXEC_PROGRAMS) $(filter-out tools/reckless,$(BIN_PROGRAMS)) $(PLUGINS)