diff --git a/0001-Make-PyObjectObRefcnt.refcnt_and_flags-64-bit-only.patch b/0001-Make-PyObjectObRefcnt.refcnt_and_flags-64-bit-only.patch
new file mode 100644
index 0000000..6147734
--- /dev/null
+++ b/0001-Make-PyObjectObRefcnt.refcnt_and_flags-64-bit-only.patch
@@ -0,0 +1,27 @@
+From c42f6b171f1be6961c7f599405a29147862642b7 Mon Sep 17 00:00:00 2001
+From: "Benjamin A. Beasley" <code@musicinmybrain.net>
+Date: Wed, 4 Jun 2025 08:58:27 -0400
+Subject: [PATCH] Make PyObjectObRefcnt.refcnt_and_flags 64-bit-only
+
+Fix #5175 as described in
+https://github.com/PyO3/pyo3/issues/5175#issuecomment-2939918138.
+---
+ include/pyo3/pyo3-ffi/src/object.rs | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/include/pyo3/pyo3-ffi/src/object.rs b/include/pyo3/pyo3-ffi/src/object.rs
+index 5fbf45d..aeb9735 100644
+--- a/include/pyo3/pyo3-ffi/src/object.rs
++++ b/include/pyo3/pyo3-ffi/src/object.rs
+@@ -49,7 +49,7 @@ pub struct PyObjectObFlagsAndRefcnt {
+ pub union PyObjectObRefcnt {
+     #[cfg(all(target_pointer_width = "64", Py_3_14))]
+     pub ob_refcnt_full: crate::PY_INT64_T,
+-    #[cfg(Py_3_14)]
++    #[cfg(all(target_pointer_width = "64", Py_3_14))]
+     pub refcnt_and_flags: PyObjectObFlagsAndRefcnt,
+     pub ob_refcnt: Py_ssize_t,
+     #[cfg(all(target_pointer_width = "64", not(Py_3_14)))]
+-- 
+2.49.0
+
diff --git a/python-orjson.spec b/python-orjson.spec
index ab35204..abc6289 100644
--- a/python-orjson.spec
+++ b/python-orjson.spec
@@ -20,6 +20,15 @@ Source:         %{pypi_source orjson}
 # Support Python 3.14
 # Updates bundled/forked pyo3-build-config/pyo3-ffi to 0.25.0
 Patch:          https://github.com/ijl/orjson/pull/570.patch
+# Cherry-pick pyo3-ffi fix for Python 3.14 i686 segfaults:
+#
+# Make PyObjectObRefcnt.refcnt_and_flags 64-bit-only
+# https://github.com/PyO3/pyo3/pull/5180
+#
+# Cherry-picked on top of https://github.com/ijl/orjson/pull/570 (without the
+# commit adding a news fragment); see
+# https://github.com/ijl/orjson/pull/570#issuecomment-2943844083.
+Patch:          0001-Make-PyObjectObRefcnt.refcnt_and_flags-64-bit-only.patch
 
 BuildRequires:  tomcli
 BuildRequires:  python3-devel