diff -urNad dict-moby-thesaurus.orig/dict-moby-thesaurus-1.0/debian/rules dict-moby-thesaurus/dict-moby-thesaurus-1.0/debian/rules
--- dict-moby-thesaurus.orig/dict-moby-thesaurus-1.0/debian/rules	2015-01-27 12:09:08.070699663 +0000
+++ dict-moby-thesaurus/dict-moby-thesaurus-1.0/debian/rules	2015-01-27 12:10:17.097743701 +0000
@@ -17,6 +17,8 @@
 	INSTALL_PROGRAM += -s
 endif
 
+BUILD_DATE := $(shell dpkg-parsechangelog --show-field Date)
+
 configure: configure-stamp
 configure-stamp:
 	dh_testdir
@@ -32,6 +34,8 @@
 
 	# Add here commands to compile the package.
 	$(PYTHON) conv.py < mthesaur.txt
+	# Ensure deterministic mtime for dictzip to inherit
+	touch --date='$(BUILD_DATE)' moby-thesaurus.dict
 	dictzip moby-thesaurus.dict
 	touch build-stamp