diff --git a/pkgs/development/compilers/gcc/patches/default.nix b/pkgs/development/compilers/gcc/patches/default.nix
index 93a1d4eb5cf3..bfe11cb0b835 100644
--- a/pkgs/development/compilers/gcc/patches/default.nix
+++ b/pkgs/development/compilers/gcc/patches/default.nix
@@ -234,4 +234,9 @@ optionals noSysDirs (
     url = "https://inbox.sourceware.org/gcc-patches/20250926170154.2222977-1-corngood@gmail.com/raw";
     hash = "sha256-mgzMRvgPdhj+Q2VRsFhpE2WQzg0CvWsc5/FRAsSU1Es=";
   })
+  (fetchpatch {
+    name = "cygwin-use-builtin_define_std-for-unix.patch";
+    url = "https://inbox.sourceware.org/gcc-patches/20250922182808.2599390-3-corngood@gmail.com/raw";
+    hash = "sha256-8I2G4430gkYoWgUued4unqhk8ZCajHf1dcivAeuLZ0E=";
+  })
 ]