diff --git a/devel/boost-libs/Makefile b/devel/boost-libs/Makefile
index 5ce2aa66d57f5..04cf1418b04a7 100644
--- a/devel/boost-libs/Makefile
+++ b/devel/boost-libs/Makefile
@@ -1,5 +1,5 @@
 PORTNAME=	boost-libs
-PORTREVISION?=	0
+PORTREVISION?=	1
 
 COMMENT=	Free portable C++ libraries (without Boost.Python)
 WWW=		https://www.boost.org/
diff --git a/devel/boost-libs/files/patch-boost_functional.hpp b/devel/boost-libs/files/patch-boost_functional.hpp
new file mode 100644
index 0000000000000..81bd330690878
--- /dev/null
+++ b/devel/boost-libs/files/patch-boost_functional.hpp
@@ -0,0 +1,28 @@
+From 6a573e4b8333ee63ee62ce95558c3667348db233 Mon Sep 17 00:00:00 2001
+From: Glen Fernandes <glen.fernandes@gmail.com>
+Date: Mon, 17 Apr 2023 06:59:02 -0400
+Subject: [PATCH] Define unary_function and binary_function unconditionally
+
+--- boost/functional.hpp.orig	2023-04-10 13:47:33 UTC
++++ boost/functional.hpp
+@@ -21,7 +21,6 @@ namespace boost
+     namespace functional
+     {
+         namespace detail {
+-#if defined(_HAS_AUTO_PTR_ETC) && !_HAS_AUTO_PTR_ETC
+             // std::unary_function and std::binary_function were both removed
+             // in C++17.
+ 
+@@ -39,12 +38,6 @@ namespace boost
+                 typedef Arg2 second_argument_type;
+                 typedef Result result_type;
+             };
+-#else
+-            // Use the standard objects when we have them.
+-
+-            using std::unary_function;
+-            using std::binary_function;
+-#endif
+         }
+     }
+