diff -urNad dict-gazetteer2k.orig/dict-gazetteer2k-1.0.0/debian/rules dict-gazetteer2k/dict-gazetteer2k-1.0.0/debian/rules
--- dict-gazetteer2k.orig/dict-gazetteer2k-1.0.0/debian/rules	2015-01-27 12:15:09.178630836 +0000
+++ dict-gazetteer2k/dict-gazetteer2k-1.0.0/debian/rules	2015-01-27 12:19:20.241716434 +0000
@@ -10,6 +10,7 @@
 
 PYTHON=python
 BASENAMES=places counties zips
+BUILD_DATE := $(shell dpkg-parsechangelog --show-field Date)
 
 ifneq (,$(findstring debug,$(DEB_BUILD_OPTIONS)))
 	CFLAGS += -g
@@ -38,6 +39,8 @@
 	$(PYTHON) zipswriter.py
 	$(PYTHON) placeswriter.py
 	$(PYTHON) countieswriter.py
+	# Ensure deterministic mtime for dictzip to inherit
+	touch --date='$(BUILD_DATE)' *.dict
 	dictzip *.dict
 
 	touch build-stamp