diff --git a/cmake-3.25.1-Boost_181.patch b/cmake-3.25.1-Boost_181.patch
new file mode 100644
index 0000000..48d4a9d
--- /dev/null
+++ b/cmake-3.25.1-Boost_181.patch
@@ -0,0 +1,52 @@
+From a97032c4e7b1efb4c5535e5f705ef8ffd5fc2dd3 Mon Sep 17 00:00:00 2001
+From: leha-bot <leha-bot@yandex.ru>
+Date: Tue, 27 Dec 2022 18:25:38 +0300
+Subject: [PATCH] FindBoost: Add Boost 1.81 support
+
+Update the list of known versions.
+
+There is a new header-only library, Boost.URL. It has no
+dependencies and has a core header `<boost/url.hpp>`.
+
+Run the command
+
+    cmake -DBOOST_DIR=/path/to/boost_1_81_0 \
+      -P Utilities/Scripts/BoostScanDeps.cmake
+
+to extract dependencies from the 1.81.0 source tree.
+They are the same as 1.80's dependencies, so just update
+the version check for warning about newer versions.
+---
+ Modules/FindBoost.cmake | 5 +++--
+ 1 file changed, 3 insertions(+), 2 deletions(-)
+
+diff --git a/Modules/FindBoost.cmake b/Modules/FindBoost.cmake
+index 0cea239ac95..72a9a4c1923 100644
+--- a/Modules/FindBoost.cmake
++++ b/Modules/FindBoost.cmake
+@@ -1380,7 +1380,7 @@ function(_Boost_COMPONENT_DEPENDENCIES component _ret)
+       set(_Boost_TIMER_DEPENDENCIES chrono)
+       set(_Boost_WAVE_DEPENDENCIES filesystem serialization thread chrono atomic)
+       set(_Boost_WSERIALIZATION_DEPENDENCIES serialization)
+-      if(Boost_VERSION_STRING VERSION_GREATER_EQUAL 1.81.0 AND NOT Boost_NO_WARN_NEW_VERSIONS)
++      if(Boost_VERSION_STRING VERSION_GREATER_EQUAL 1.82.0 AND NOT Boost_NO_WARN_NEW_VERSIONS)
+         message(WARNING "New Boost version may have incorrect or missing dependencies and imported targets")
+       endif()
+     endif()
+@@ -1466,6 +1466,7 @@ function(_Boost_COMPONENT_HEADERS component _hdrs)
+   set(_Boost_TIMER_HEADERS               "boost/timer.hpp")
+   set(_Boost_TYPE_ERASURE_HEADERS        "boost/type_erasure/config.hpp")
+   set(_Boost_UNIT_TEST_FRAMEWORK_HEADERS "boost/test/framework.hpp")
++  set(_Boost_URL_HEADERS                 "boost/url.hpp")
+   set(_Boost_WAVE_HEADERS                "boost/wave.hpp")
+   set(_Boost_WSERIALIZATION_HEADERS      "boost/archive/text_wiarchive.hpp")
+   set(_Boost_BZIP2_HEADERS               "boost/iostreams/filter/bzip2.hpp")
+@@ -1653,7 +1654,7 @@ else()
+   # _Boost_COMPONENT_HEADERS.  See the instructions at the top of
+   # _Boost_COMPONENT_DEPENDENCIES.
+   set(_Boost_KNOWN_VERSIONS ${Boost_ADDITIONAL_VERSIONS}
+-    "1.80.0" "1.80" "1.79.0" "1.79"
++    "1.81.0" "1.81" "1.80.0" "1.80" "1.79.0" "1.79"
+     "1.78.0" "1.78" "1.77.0" "1.77" "1.76.0" "1.76" "1.75.0" "1.75" "1.74.0" "1.74"
+     "1.73.0" "1.73" "1.72.0" "1.72" "1.71.0" "1.71" "1.70.0" "1.70" "1.69.0" "1.69"
+     "1.68.0" "1.68" "1.67.0" "1.67" "1.66.0" "1.66" "1.65.1" "1.65.0" "1.65"
diff --git a/cmake.spec b/cmake.spec
index 4a6cea5..fa9da66 100644
--- a/cmake.spec
+++ b/cmake.spec
@@ -68,7 +68,7 @@
 %{?rcsuf:%global versuf -%{rcsuf}}
 
 # For handling bump release by rpmdev-bumpspec and mass rebuild
-%global baserelease 2
+%global baserelease 3
 
 # Uncomment if building for EPEL
 #global name_suffix %%{major_version}
@@ -112,6 +112,10 @@ Patch101:       %{name}-fedora-flag_release.patch
 Patch102:       %{name}-mingw-dl.patch
 %endif
 
+# FindBoost: Add Boost 1.81 support.
+# https://github.com/Kitware/CMake/commit/a97032c4e7b1efb4c5535e5f705ef8ffd5fc2dd3
+Patch200:       https://github.com/Kitware/CMake/commit/a97032c4e7b1efb4c5535e5f705ef8ffd5fc2dd3.patch#/%{name}-3.25.1-Boost_181.patch
+
 # Patch for renaming on EPEL
 %if 0%{?name_suffix:1}
 Patch1:         %{name}-rename.patch
@@ -525,6 +529,9 @@ popd
 
 
 %changelog
+* Sun Jan 15 2023 Björn Esser <besser82@fedoraproject.org> - 3.25.1-3
+- Backport upstream patch for Boost v1.81 support
+
 * Fri Jan 13 2023 Neal Gompa <ngompa@fedoraproject.org> - 3.25.1-2
 - Adjust ctest macro to use native out-of-tree support