diff --git a/backport-On-gcc-12-dont-use-num-fast-path.patch b/backport-On-gcc-12-dont-use-num-fast-path.patch
deleted file mode 100644
index bd29d0b578602d61301a04b1b0d227962776fbdf..0000000000000000000000000000000000000000
--- a/backport-On-gcc-12-dont-use-num-fast-path.patch
+++ /dev/null
@@ -1,36 +0,0 @@
-From ab0beceae7b589b2f6c270cc91cc38a86e8f28ea Mon Sep 17 00:00:00 2001
-From: Behdad Esfahbod <behdad@behdad.org>
-Date: Tue, 23 Sep 2025 10:22:22 -0400
-Subject: [PATCH] On gcc <= 12 don't use num fast path
-
-Fixes https://github.com/harfbuzz/harfbuzz/issues/5456
----
- src/hb-algs.hh | 8 ++++++++
- 1 file changed, 8 insertions(+)
-
-diff --git a/src/hb-algs.hh b/src/hb-algs.hh
-index 7dfa9769699..d87daa1d3d0 100644
---- a/src/hb-algs.hh
-+++ b/src/hb-algs.hh
-@@ -92,6 +92,7 @@ template <typename Type>
- struct __attribute__((packed)) hb_packed_t { Type v; };
- 
- #ifndef HB_FAST_NUM_ACCESS
-+
- #if defined(__OPTIMIZE__) && \
-     defined(__BYTE_ORDER) && \
-     (__BYTE_ORDER == __BIG_ENDIAN || \
-@@ -102,6 +103,13 @@ struct __attribute__((packed)) hb_packed_t { Type v; };
- #else
- #define HB_FAST_NUM_ACCESS 0
- #endif
-+
-+// https://github.com/harfbuzz/harfbuzz/issues/5456
-+#if defined(__GNUC__) && !defined(__clang__) && (__GNUC__ <= 12)
-+#undef HB_FAST_NUM_ACCESS
-+#define HB_FAST_NUM_ACCESS 0
-+#endif
-+
- #endif
- 
- template <bool BE, typename Type, int Bytes = sizeof (Type)>
diff --git a/harfbuzz-11.5.1.tar.xz b/harfbuzz-12.0.0.tar.xz
similarity index 32%
rename from harfbuzz-11.5.1.tar.xz
rename to harfbuzz-12.0.0.tar.xz
index 7bddb7299fac7073e868ed7f94a20e3fde69e491..a2b928e4fe94d3c53d74817864102fe5333ef730 100644
--- a/harfbuzz-11.5.1.tar.xz
+++ b/harfbuzz-12.0.0.tar.xz
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:972a60a8d274d49e70361da6920c3a73dfb0fb4387f6c6811906a47ba634d8a1
-size 18212420
+oid sha256:9f63c4a0fcdcb90b5a2c54dd17ad23429dfb281de6c0986863b8a89a05e5bc27
+size 18212392
diff --git a/harfbuzz.spec b/harfbuzz.spec
index bbf9e5384257079409fa6a95e4073935b02cf0ce..bb9ef9b53292e8aed88e3cd6307af13ff0fcc601 100644
--- a/harfbuzz.spec
+++ b/harfbuzz.spec
@@ -1,12 +1,10 @@
 Name:           harfbuzz
-Version:        11.5.1
+Version:        12.0.0
 Release:        1
 Summary:        A text shaping engine
 License:        MIT-Modern-Variant
 URL:            https://harfbuzz.github.io/
 Source0:        https://github.com/harfbuzz/harfbuzz/releases/download/%{version}/harfbuzz-%{version}.tar.xz
-# https://github.com/harfbuzz/harfbuzz/pull/5578
-Patch6001:      backport-On-gcc-12-dont-use-num-fast-path.patch
 BuildRequires:  meson >= 0.60.0
 BuildRequires:  gobject-introspection-devel
 BuildRequires:  gtk-doc
@@ -76,6 +74,9 @@ Header files and libraries for building a extension library for %{name}.
 %{_datadir}/gtk-doc/html/harfbuzz
 
 %changelog
+* Sun Sep 28 2025 Funda Wang <fundawang@yeah.net> - 12.0.0-1
+- update to 12.0.0
+
 * Wed Sep 24 2025 Funda Wang <fundawang@yeah.net> - 11.5.1-1
 - update to 11.5.1