diff --git a/pkgs/by-name/mp/mpir/package.nix b/pkgs/by-name/mp/mpir/package.nix
index 86fbbd5d8e91..8a45d1202a23 100644
--- a/pkgs/by-name/mp/mpir/package.nix
+++ b/pkgs/by-name/mp/mpir/package.nix
@@ -41,6 +41,10 @@ stdenv.mkDerivation rec {
       url = "https://github.com/wbhart/mpir/commit/4ff3b770cbf86e29b75d12c13e8b854c74bccc5a.patch";
       hash = "sha256-dCB2+1IYTGzHUQkDUF4gqvR1xoMPEYVPLGE+EP2wLL4=";
     })
+    (fetchpatch {
+      url = "https://gitlab.alpinelinux.org/alpine/aports/-/raw/a67361db03777a80446ffa8e512f26edb299268f/community/mpir/gcc15.patch";
+      hash = "sha256-8RqMHYqDowHytgBd4RsGEOLkk+spYS+iqWQL2kzGAtI=";
+    })
   ];
 
   configureFlags = [ "--enable-cxx" ] ++ lib.optionals stdenv.hostPlatform.isLinux [ "--enable-fat" ];