diff --git a/macOS/deps/Makefile b/macOS/deps/Makefile
index 299b7a7b5f3b12ea765a9d0140ada635454fee33..48e33f15c12ae428a90f7382dbdbb01b52bd7d3b 100644
--- a/macOS/deps/Makefile
+++ b/macOS/deps/Makefile
@@ -135,7 +135,7 @@ clean-slicot-all: clean-slicot-src clean-slicot-tar clean-libslicot
 #
 tarballs/x13assrc_V$(X13AS_VERSION).tar.gz:
 	mkdir -p tarballs
-	wget $(WGET_OPTIONS) -O $@ https://www.census.gov/ts/x13as/unix/x13assrc_V$(X13AS_VERSION).tar.gz
+	wget $(WGET_OPTIONS) -O $@ https://ftp.debian.org/debian/pool/non-free/x/x13as/x13as_$(subst _,-,$(X13AS_VERSION)).orig.tar.gz
 
 sources64/x13as-$(X13AS_VERSION): tarballs/x13assrc_V$(X13AS_VERSION).tar.gz
 	rm -rf sources64/x13as-*