diff --git a/0002-units-2.17-no-network.patch b/0002-units-2.17-no-network.patch
new file mode 100644
index 0000000..3456f9b
--- /dev/null
+++ b/0002-units-2.17-no-network.patch
@@ -0,0 +1,47 @@
+From 06a4ba00e8e4188486fa962dbccbfa1e6afe2cf2 Mon Sep 17 00:00:00 2001
+From: Kamil Dudka <kdudka@redhat.com>
+Date: Wed, 8 Aug 2018 18:08:34 +0200
+Subject: [PATCH] Makefile.in: do not update currency.units from network
+
+Builds of packages are supposed to be reproducible.
+---
+ Makefile.in | 9 +--------
+ 1 file changed, 1 insertion(+), 8 deletions(-)
+
+diff --git a/Makefile.in b/Makefile.in
+index 70e2e10..7c1ee5b 100644
+--- a/Makefile.in
++++ b/Makefile.in
+@@ -58,8 +58,6 @@ DEFS=-DUNITSFILE=\"@UDAT@definitions.units\" -DLOCALEMAP=\"@UDAT@locale_map.txt\
+ CFLAGS = @CFLAGS@
+ OBJECTS = units.@OBJEXT@ parse.tab.@OBJEXT@ getopt.@OBJEXT@ getopt1.@OBJEXT@ @STRFUNC@
+ 
+-.PHONY: currency-units-update
+-
+ .SUFFIXES:
+ .SUFFIXES: .c .@OBJEXT@ .rc .res .texinfo .pdf
+ 
+@@ -107,7 +105,7 @@ units_cur_inst: units_cur
+             -e "s@/usr/bin/python@$(PYTHON)@" \
+              $(srcdir)/units_cur > units_cur_inst
+ 
+-install-support: definitions.units units_cur_inst currency-units-update
++install-support: definitions.units units_cur_inst
+ 	$(MKDIR_P) $(DESTDIR)@UDAT@ $(DESTDIR)$(bindir) $(DESTDIR)@CDAT@
+ 	$(INSTALL_DATA) $(srcdir)/definitions.units $(DESTDIR)@UDAT@definitions.units
+ 	-rm -f $(DESTDIR)@UDAT@currency.units
+@@ -204,11 +202,6 @@ texclean:
+ 	-rm -f units.log UnitsMKS.log UnitsWin.log \
+ 	    *.aux *.cp *.fn *.ky *.op *.pg *.toc *.tp *.vr
+ 
+-currency-units-update: 
+-	@echo "Trying to update currency.units (will use existing file if this fails)"
+-	-$(srcdir)/units_cur currency.units
+-	if [ ! -s currency.units ]; then cp $(srcdir)/currency.units currency.units;fi
+-
+ sig:
+ 	echo units-`sed -n -e '/\#.*VERSION/s/.*"\(.*\)"/\1/gp' \
+ 	    $(srcdir)/units.c`.tar.gz > distname
+-- 
+2.17.1
+
diff --git a/units.spec b/units.spec
index 15d5092..30b44dd 100644
--- a/units.spec
+++ b/units.spec
@@ -17,6 +17,9 @@ BuildRequires: readline-devel
 # units_cur: validate rate data from server (#1598913)
 Patch1: 0001-units-2.17-units_cur-validate.patch
 
+# do not update currency.units from network during build
+Patch2: 0002-units-2.17-no-network.patch
+
 %description
 Units converts an amount from one unit to another, or tells you what
 mathematical operation you need to perform to convert from one unit to
@@ -67,6 +70,7 @@ fi
 
 %changelog
 * Wed Aug 08 2018 Kamil Dudka <kdudka@redhat.com> - 2.17-5
+- do not update currency.units from network during build
 - units_cur: validate rate data from server (#1598913)
 
 * Sat Jul 14 2018 Fedora Release Engineering <releng@fedoraproject.org> - 2.17-4