diff --git a/mingw64-headers.changes b/mingw64-headers.changes
index 36a4030..a387421 100644
--- a/mingw64-headers.changes
+++ b/mingw64-headers.changes
@@ -1,3 +1,11 @@
+-------------------------------------------------------------------
+Mon May 12 20:26:43 UTC 2025 - Ralf Habacker <ralf.habacker@freenet.de>
+
+- Add support to use a different crt (boo#1243096)
+  By specifying %_mingw64_crt <crt> in the obs project config
+  a different c runtime library can be used for building this
+  package.
+
 -------------------------------------------------------------------
 Mon Oct  7 10:21:51 UTC 2024 - Jan Engelhardt <jengelh@inai.de>
 
diff --git a/mingw64-headers.spec b/mingw64-headers.spec
index cbb204d..ddd6027 100644
--- a/mingw64-headers.spec
+++ b/mingw64-headers.spec
@@ -54,7 +54,9 @@ an actual pthread implementation (like winpthreads) is installed.
 %autosetup -n mingw-w64-v%version/mingw-w64-headers -p2
 
 %build
-%_mingw64_configure --enable-sdk=all --with-default-msvcrt=msvcrt
+%_mingw64_configure \
+    --enable-sdk=all \
+    --with-default-msvcrt=%{?_mingw64_crt:%{_mingw64_crt}}%{!?_mingw64_crt:msvcrt}
 %make_build
 
 %install