Index: lib/libpm.c
--- lib/libpm.c.orig
+++ lib/libpm.c
@@ -10,6 +10,7 @@
 
 #define _DEFAULT_SOURCE      /* New name for SVID & BSD source defines */
 #define _XOPEN_SOURCE 500    /* Make sure ftello, fseeko are defined */
+#define _BSD_SOURCE          /* arc4random */
 
 #include "netpbm/pm_config.h"
 
@@ -832,7 +833,7 @@ pm_arg0toprogname(const char arg0[]) {
 unsigned int
 pm_randseed(void) {
 
-    return time(NULL) ^ getpid();
+    return arc4random();
 
 }