diff --git a/st.c b/st.c
index 27536d2..eb5b6b0 100644
--- a/st.c
+++ b/st.c
@@ -4224,6 +4224,12 @@ run(void)
 	struct timespec drawtimeout, *tv = NULL, now, last, lastblink;
 	long deltatime;
 
+#if defined(__OpenBSD__)
+	if (pledge("stdio rpath wpath tty proc getpw exec", NULL) < 0) {
+		die("pledge\n");
+	}
+#endif
+
 	/* Waiting for window mapping */
 	do {
 		XNextEvent(xw.dpy, &ev);
@@ -4247,6 +4253,12 @@ run(void)
 	clock_gettime(CLOCK_MONOTONIC, &last);
 	lastblink = last;
 
+#if defined(__OpenBSD__)
+	if (pledge("stdio rpath tty proc", NULL) < 0) {
+		die("pledge\n");
+	}
+#endif
+
 	for (xev = actionfps;;) {
 		FD_ZERO(&rfd);
 		FD_SET(cmdfd, &rfd);