--- a/debian/patches/reproducible_build.patch	1970-01-01 01:00:00.000000000 +0100
--- b/debian/patches/reproducible_build.patch	2015-12-26 10:12:25.685942562 +0000
@@ -0,0 +1,16 @@
+--- air-quality-sensor-0.1.3.orig/configure.ac
++++ air-quality-sensor-0.1.3/configure.ac
+@@ -8,7 +8,12 @@ AC_CHECK_FUNCS(getopt_long)
+ 
+ dnl Copyright will apply as long as these sources are in use, e.g., are
+ dnl being compiled, which is reasonable year to claim the copyright.
+-AC_DEFINE([COPYRIGHT_YEAR], [m4_esyscmd([date +%Y])], [year in copyright message])
++if test "x$SOURCE_DATE_EPOCH" = "x"; then
++    year=m4_esyscmd([date +%Y])
++else
++    year=`date -u -d "@$SOURCE_DATE_EPOCH" "+%Y" 2>/dev/null || date -u -r "$SOURCE_DATE_EPOCH" "+%Y" 2>/dev/null || date -u "+%Y"`
++fi
++AC_DEFINE_UNQUOTED([COPYRIGHT_YEAR], ["$year"], [year in copyright message])
+ 
+ libusb_is_old=0
+ AC_CHECK_LIB(usb-1.0, libusb_get_parent, [], [libusb_is_old=1])
--- a/debian/patches/series	1970-01-01 01:00:00.000000000 +0100
--- b/debian/patches/series	2015-12-26 09:51:55.930653536 +0000
@@ -0,0 +1 @@
+reproducible_build.patch