diff --git a/config/Makefile b/config/Makefile
index da12838..67e7998 100644
--- a/config/Makefile
+++ b/config/Makefile
@@ -7,9 +7,11 @@ include $(top_builddir)/src/Makefile.global
 
 install: all installdirs
 	$(INSTALL_SCRIPT) $(srcdir)/install-sh '$(DESTDIR)$(pgxsdir)/config/install-sh'
+	$(INSTALL_SCRIPT) $(srcdir)/missing '$(DESTDIR)$(pgxsdir)/config/missing'
 
 installdirs:
 	$(MKDIR_P) '$(DESTDIR)$(pgxsdir)/config'
 
 uninstall:
 	rm -f '$(DESTDIR)$(pgxsdir)/config/install-sh'
+	rm -f '$(DESTDIR)$(pgxsdir)/config/missing'