diff --git a/configure.ac b/configure.ac
index ef6927d..041eab8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -202,7 +202,11 @@
 	AC_CHECK_FUNCS([clock_gettime], [have_clock_gettime=yes], [have_clock_gettime=])
 	if test "x$have_clock_gettime" = xyes; then
 		AC_CHECK_DECL([CLOCK_MONOTONIC], [], [AC_MSG_ERROR([C library headers missing definition for CLOCK_MONOTONIC])], [[#include <time.h>]])
-		AC_CHECK_DECL([CLOCK_REALTIME], [], [AC_MSG_ERROR([C library headers missing definition for CLOCK_REALTIME])], [[#include <time.h>]])
+		dnl use the monotonic clock for condition variable timed waits if possible
+		AC_CHECK_FUNCS([pthread_condattr_setclock], [need_clock_realtime=], [need_clock_realtime=yes])
+		if test "x$need_clock_realtime" = xyes; then
+			AC_CHECK_DECL([CLOCK_REALTIME], [], [AC_MSG_ERROR([C library headers missing definition for CLOCK_REALTIME])], [[#include <time.h>]])
+		fi
 	elif test "x$backend" != xdarwin; then
 		AC_MSG_ERROR([clock_gettime() is required on this platform])
 	fi
diff --git a/libusb/os/threads_posix.c b/libusb/os/threads_posix.c
index c1745b3..0e0e221 100644
--- a/libusb/os/threads_posix.c
+++ b/libusb/os/threads_posix.c
@@ -39,13 +39,31 @@
 # include <sys/lwp.h>
 #endif
 
+void usbi_cond_init(pthread_cond_t *cond)
+{
+#ifdef HAVE_PTHREAD_CONDATTR_SETCLOCK
+	pthread_condattr_t condattr;
+
+	PTHREAD_CHECK(pthread_condattr_init(&condattr));
+	PTHREAD_CHECK(pthread_condattr_setclock(&condattr, CLOCK_MONOTONIC));
+	PTHREAD_CHECK(pthread_cond_init(cond, &condattr));
+	PTHREAD_CHECK(pthread_condattr_destroy(&condattr));
+#else
+	PTHREAD_CHECK(pthread_cond_init(cond, NULL));
+#endif
+}
+
 int usbi_cond_timedwait(pthread_cond_t *cond,
 	pthread_mutex_t *mutex, const struct timeval *tv)
 {
 	struct timespec timeout;
 	int r;
 
+#ifdef HAVE_PTHREAD_CONDATTR_SETCLOCK
+	usbi_get_monotonic_time(&timeout);
+#else
 	usbi_get_real_time(&timeout);
+#endif
 
 	timeout.tv_sec += tv->tv_sec;
 	timeout.tv_nsec += tv->tv_usec * 1000L;
diff --git a/libusb/os/threads_posix.h b/libusb/os/threads_posix.h
index e187c69..8a59fe2 100644
--- a/libusb/os/threads_posix.h
+++ b/libusb/os/threads_posix.h
@@ -63,10 +63,7 @@
 }
 
 typedef pthread_cond_t usbi_cond_t;
-static inline void usbi_cond_init(pthread_cond_t *cond)
-{
-	PTHREAD_CHECK(pthread_cond_init(cond, NULL));
-}
+void usbi_cond_init(pthread_cond_t *cond);
 static inline void usbi_cond_wait(usbi_cond_t *cond, usbi_mutex_t *mutex)
 {
 	PTHREAD_CHECK(pthread_cond_wait(cond, mutex));
diff --git a/libusb/version_nano.h b/libusb/version_nano.h
index 2c1248a..c859d43 100644
--- a/libusb/version_nano.h
+++ b/libusb/version_nano.h
@@ -1 +1 @@
-#define LIBUSB_NANO 11558
+#define LIBUSB_NANO 11559