diff --git a/chromium-124-libdav1d-aarch64.patch b/chromium-124-libdav1d-aarch64.patch
new file mode 100644
index 00000000..03862e93
--- /dev/null
+++ b/chromium-124-libdav1d-aarch64.patch
@@ -0,0 +1,53 @@
+--- chromium-124.0.6367.60/third_party/dav1d/libdav1d/src/arm/asm.S	2024-04-15 22:34:36.000000000 +0200
++++ chromium-122.0.6261.128/third_party/dav1d/libdav1d/src/arm/asm.S	2024-03-13 00:38:27.000000000 +0100
+@@ -34,50 +34,6 @@
+ #define x18 do_not_use_x18
+ #define w18 do_not_use_w18
+ 
+-#if HAVE_AS_ARCH_DIRECTIVE
+-        .arch AS_ARCH_LEVEL
+-#endif
+-
+-#if HAVE_AS_ARCHEXT_DOTPROD_DIRECTIVE
+-#define ENABLE_DOTPROD  .arch_extension dotprod
+-#define DISABLE_DOTPROD .arch_extension nodotprod
+-#else
+-#define ENABLE_DOTPROD
+-#define DISABLE_DOTPROD
+-#endif
+-#if HAVE_AS_ARCHEXT_I8MM_DIRECTIVE
+-#define ENABLE_I8MM  .arch_extension i8mm
+-#define DISABLE_I8MM .arch_extension noi8mm
+-#else
+-#define ENABLE_I8MM
+-#define DISABLE_I8MM
+-#endif
+-#if HAVE_AS_ARCHEXT_SVE_DIRECTIVE
+-#define ENABLE_SVE  .arch_extension sve
+-#define DISABLE_SVE .arch_extension nosve
+-#else
+-#define ENABLE_SVE
+-#define DISABLE_SVE
+-#endif
+-#if HAVE_AS_ARCHEXT_SVE2_DIRECTIVE
+-#define ENABLE_SVE2  .arch_extension sve2
+-#define DISABLE_SVE2 .arch_extension nosve2
+-#else
+-#define ENABLE_SVE2
+-#define DISABLE_SVE2
+-#endif
+-
+-/* If we do support the .arch_extension directives, disable support for all
+- * the extensions that we may use, in case they were implicitly enabled by
+- * the .arch level. This makes it clear if we try to assemble an instruction
+- * from an unintended extension set; we only allow assmbling such instructions
+- * within regions where we explicitly enable those extensions. */
+-DISABLE_DOTPROD
+-DISABLE_I8MM
+-DISABLE_SVE
+-DISABLE_SVE2
+-
+-
+ /* Support macros for
+  *   - Armv8.3-A Pointer Authentication and
+  *   - Armv8.5-A Branch Target Identification
diff --git a/chromium.spec b/chromium.spec
index 750851ad..c1c19228 100644
--- a/chromium.spec
+++ b/chromium.spec
@@ -460,6 +460,9 @@ Patch315: chromium-124-python3-assignment-expressions.patch
 # add -ftrivial-auto-var-init=zero and -fwrapv
 Patch316: chromium-122-clang-build-flags.patch
 
+# build error: unknown architectural extension on aarch64 (epel and < f39)
+Patch317: chromium-124-libdav1d-aarch64.patch
+
 # Workaround for https://bugzilla.redhat.com/show_bug.cgi?id=2239523
 # https://bugs.chromium.org/p/chromium/issues/detail?id=1145581#c60
 # Disable BTI until this is fixed upstream.
@@ -1220,6 +1223,7 @@ udev.
 %patch -P307 -p1 -R -b .v8-c++20
 %patch -P308 -p1 -R -b .v8-c++20
 %patch -P314 -p1 -b .clang16-buildflag
+%patch -P317 -p1 -b .libdav1d-aarch64
 %endif
 
 %patch -P310 -p1 -b .missing-header-files