diff --git a/contrib/debian/rules b/contrib/debian/rules
--- a/contrib/debian/rules
+++ b/contrib/debian/rules
@@ -31,4 +31,6 @@ override_dh_install:
 	cp contrib/hgk $(CURDIR)/debian/mercurial-common/usr/share/mercurial
 	mkdir -p $(CURDIR)/debian/mercurial-common/etc/mercurial/hgrc.d/
 	cp contrib/debian/*.rc $(CURDIR)/debian/mercurial-common/etc/mercurial/hgrc.d/
+	mkdir -p $(CURDIR)/debian/mercurial-common/usr/share/bash-completion/completions
+	cp contrib/bash_completion $(CURDIR)/debian/mercurial-common/usr/share/bash-completion/completions/mercurial
 	rm $(CURDIR)/debian/mercurial-common/usr/bin/hg