diff --git a/CHANGES b/CHANGES
index 4d26e26320..9c833fabee 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,7 @@
+4499.	[port]		MacOSX: silence deprecated function warning 
+			by using arc4random_stir() when available
+			instead of arc4random_addrandom(). [RT #43503]
+
 4498.	[test]		Simplify prerequisite checks in system tests.
 			[RT #43516]
 
diff --git a/config.h.in b/config.h.in
index 7650e60b32..28f4568a5d 100644
--- a/config.h.in
+++ b/config.h.in
@@ -73,6 +73,9 @@
 /** define if arc4random() exists */
 #undef HAVE_ARC4RANDOM
 
+/** define if arc4random_stir() exists */
+#undef HAVE_ARC4RANDOM_STIR
+
 /** define if arc4random_addrandom() exists */
 #undef HAVE_ARC4RANDOM_ADDRANDOM
 
diff --git a/configure b/configure
index 34b8708c20..56611bfa25 100755
--- a/configure
+++ b/configure
@@ -14713,8 +14713,8 @@ fi
 
 
 #
-# Do we have arc4random(), etc ? arc4random_addrandom() has been removed
-# from OpenBSD 5.5 onwards.
+# Do we have arc4random(), etc ?
+# Will use stir and if not exist addrandom
 #
 ac_fn_c_check_func "$LINENO" "arc4random" "ac_cv_func_arc4random"
 if test "x$ac_cv_func_arc4random" = xyes; then :
@@ -14722,6 +14722,12 @@ if test "x$ac_cv_func_arc4random" = xyes; then :
 
 fi
 
+ac_fn_c_check_func "$LINENO" "arc4random_stir" "ac_cv_func_arc4random_stir"
+if test "x$ac_cv_func_arc4random_stir" = xyes; then :
+  $as_echo "#define HAVE_ARC4RANDOM_STIR 1" >>confdefs.h
+
+fi
+
 ac_fn_c_check_func "$LINENO" "arc4random_addrandom" "ac_cv_func_arc4random_addrandom"
 if test "x$ac_cv_func_arc4random_addrandom" = xyes; then :
   $as_echo "#define HAVE_ARC4RANDOM_ADDRANDOM 1" >>confdefs.h
diff --git a/configure.in b/configure.in
index 5b86dc96a0..1c13904cdd 100644
--- a/configure.in
+++ b/configure.in
@@ -1417,10 +1417,11 @@ fi
 AC_SUBST(CHECK_DSA)
 
 #
-# Do we have arc4random(), etc ? arc4random_addrandom() has been removed
-# from OpenBSD 5.5 onwards.
+# Do we have arc4random(), etc ?
+# Will use stir and if not exist addrandom
 #
 AC_CHECK_FUNC(arc4random, AC_DEFINE(HAVE_ARC4RANDOM))
+AC_CHECK_FUNC(arc4random_stir, AC_DEFINE(HAVE_ARC4RANDOM_STIR))
 AC_CHECK_FUNC(arc4random_addrandom, AC_DEFINE(HAVE_ARC4RANDOM_ADDRANDOM))
 
 sinclude(config.threads.in)dnl
diff --git a/lib/isc/random.c b/lib/isc/random.c
index 926b899e46..b0d81c433c 100644
--- a/lib/isc/random.c
+++ b/lib/isc/random.c
@@ -67,17 +67,12 @@ isc_random_seed(isc_uint32_t seed)
 
 #ifndef HAVE_ARC4RANDOM
 	srand(seed);
+#elif defined(HAVE_ARC4RANDOM_STIR)
+	/* Formally not necessary... */
+	UNUSED(seed);
+	arc4random_stir();
 #elif defined(HAVE_ARC4RANDOM_ADDRANDOM)
 	arc4random_addrandom((u_char *) &seed, sizeof(isc_uint32_t));
-#else
-	/*
-	 * If arcrandom() is available and no corresponding seeding
-	 * function arc4random_addrandom() is available, no seeding is
-	 * done on such platforms (e.g., OpenBSD 5.5). This is because
-	 * the OS itself is supposed to seed the RNG and it is assumed
-	 * that no explicit seeding is required.
-	 */
-	UNUSED(seed);
 #endif
 }