diff --git a/macOS/deps/Makefile b/macOS/deps/Makefile
index c51c744954faaf34535e7339d52cf3060304397d..ec6a351165e702acff7a8bbc9df7d2f0944385d6 100644
--- a/macOS/deps/Makefile
+++ b/macOS/deps/Makefile
@@ -132,11 +132,11 @@ clean-slicot-all: clean-slicot-src clean-slicot-tar clean-libslicot
 #
 # X13AS
 #
-tarballs/x13assrc_V$(X13AS_VERSION).tar.gz:
+tarballs/x13as_asciisrc-v$(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 $@ https://www2.census.gov/software/x-13arima-seats/x13as/unix-linux/program-archives/x13as_asciisrc-v$(X13AS_VERSION).tar.gz
 
-sources64/x13as-$(X13AS_VERSION): tarballs/x13assrc_V$(X13AS_VERSION).tar.gz
+sources64/x13as-$(X13AS_VERSION): tarballs/x13as_asciisrc-v$(X13AS_VERSION).tar.gz
 	rm -rf sources64/x13as-*
 	mkdir -p $@
 	tar xf $< --directory $@
diff --git a/macOS/deps/versions.mk b/macOS/deps/versions.mk
index c3e232fe34baca6372497762adb337250baa1fd1..0c11b6b2cb62118318fa60870239f958abb11455 100644
--- a/macOS/deps/versions.mk
+++ b/macOS/deps/versions.mk
@@ -1,2 +1,2 @@
 SLICOT_VERSION = 5.0+20101122
-X13AS_VERSION = 1.1_B39
+X13AS_VERSION = 1-1-b58
diff --git a/windows/deps/Makefile b/windows/deps/Makefile
index 40c6c349007c51526e89f4bb28a10f1ae168c4ab..6a2ece0a23df3dcd48786b35aa57c66d39311760 100644
--- a/windows/deps/Makefile
+++ b/windows/deps/Makefile
@@ -193,11 +193,11 @@ clean-msys2:
 # X13AS
 #
 
-tarballs/x13assrc_V$(X13AS_VERSION).tar.gz:
+tarballs/x13as_asciisrc-v$(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 $@ https://www2.census.gov/software/x-13arima-seats/x13as/unix-linux/program-archives/x13as_asciisrc-v$(X13AS_VERSION).tar.gz
 
-sources64/x13as-$(X13AS_VERSION): tarballs/x13assrc_V$(X13AS_VERSION).tar.gz
+sources64/x13as-$(X13AS_VERSION): tarballs/x13as_asciisrc-v$(X13AS_VERSION).tar.gz
 	rm -rf sources64/x13as-*
 	mkdir -p $@
 	tar xf $< --directory $@
diff --git a/windows/deps/versions.mk b/windows/deps/versions.mk
index bb21ed7b499a3ada479aec45b0d8e3be269c46b6..5d865cd6188377059f1792a14c1905dd191c6ffc 100644
--- a/windows/deps/versions.mk
+++ b/windows/deps/versions.mk
@@ -1,5 +1,5 @@
 SLICOT_VERSION = 5.0+20101122
-X13AS_VERSION = 1.1_B39
+X13AS_VERSION = 1-1-b58
 
 OCTAVE_VERSION = 6.4.0
 OCTAVE_W64_BUILD =