Index: elfcopy/archive.c
===================================================================
--- elfcopy/archive.c
+++ elfcopy/archive.c
@@ -440,6 +440,7 @@
 	struct archive		*a;
 	struct archive_entry	*entry;
 	struct ar_obj		*obj;
+	time_t			 timestamp;
 	int			 nr;
 
 	if ((a = archive_write_new()) == NULL)
@@ -450,7 +451,9 @@
 	/* Write the archive symbol table, even if it's empty. */
 	entry = archive_entry_new();
 	archive_entry_copy_pathname(entry, "/");
-	archive_entry_set_mtime(entry, time(NULL), 0);
+	if (elftc_timestamp(&timestamp) != 0)
+		err(EXIT_FAILURE, "elftc_timestamp");
+	archive_entry_set_mtime(entry, timestamp, 0);
 	archive_entry_set_size(entry, (ecp->s_cnt + 1) * sizeof(uint32_t) +
 	    ecp->s_sn_sz);
 	AC(archive_write_header(a, entry));
Index: elfcopy/pe.c
===================================================================
--- elfcopy/pe.c
+++ elfcopy/pe.c
@@ -54,6 +54,7 @@
 	PE_Buffer *pb;
 	const char *name;
 	size_t indx;
+	time_t timestamp;
 	int elferr;
 
 	if (ecp->otf == ETF_EFI || ecp->oem == EM_X86_64)
@@ -89,7 +90,9 @@
 		pch.ch_machine = IMAGE_FILE_MACHINE_UNKNOWN;
 		break;
 	}
-	pch.ch_timestamp = (uint32_t) time(NULL);
+	if (elftc_timestamp(&timestamp) != 0)
+		err(EXIT_FAILURE, "elftc_timestamp");
+	pch.ch_timestamp = (uint32_t) timestamp;
 	if (pe_update_coff_header(pe, &pch) < 0)
 		err(EXIT_FAILURE, "pe_update_coff_header() failed");