diff --git a/.gitignore b/.gitignore
index 9fe6224..edc287e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -15,3 +15,4 @@
 /orjson-3.10.10.tar.gz
 /orjson-3.10.11.tar.gz
 /orjson-3.10.12.tar.gz
+/orjson-3.10.13.tar.gz
diff --git a/orjson-3.10.13-unpin-maturin.patch b/orjson-3.10.13-unpin-maturin.patch
new file mode 100644
index 0000000..4de1017
--- /dev/null
+++ b/orjson-3.10.13-unpin-maturin.patch
@@ -0,0 +1,12 @@
+diff -Naur orjson-3.10.13-original/pyproject.toml orjson-3.10.13/pyproject.toml
+--- orjson-3.10.13-original/pyproject.toml	2024-12-29 18:05:45.000000000 -0500
++++ orjson-3.10.13/pyproject.toml	2024-12-30 08:39:38.935289119 -0500
+@@ -31,7 +31,7 @@
+ 
+ [build-system]
+ build-backend = "maturin"
+-requires = ["maturin==1.7.8"]
++requires = ["maturin>=1,<2"]
+ 
+ [tool.maturin]
+ python-source = "pysrc"
diff --git a/python-orjson.spec b/python-orjson.spec
index 4af3e8a..85d4f16 100644
--- a/python-orjson.spec
+++ b/python-orjson.spec
@@ -8,7 +8,7 @@
 %bcond tests 1
 
 Name:           python-orjson
-Version:        3.10.12
+Version:        3.10.13
 Release:        %autorelease
 Summary:        Fast, correct Python JSON library
 
@@ -16,6 +16,31 @@ License:        Apache-2.0 OR MIT
 URL:            https://github.com/ijl/orjson
 Source:         %{pypi_source orjson}
 
+# To fix compatibility with maturin 1.8.0 and later *in the GitHub source
+# archive*, we would need:
+#
+#   pyproject.toml: Specify version metadata as dynamic
+#   https://github.com/ijl/orjson/pull/542
+#
+#   Fixes:
+#
+#   Build error with maturin 1.8.0
+#   https://github.com/ijl/orjson/issues/541
+#
+#   See also:
+#
+#   https://github.com/PyO3/maturin/issues/2390
+#
+# Upstream rejected this PR and decided to pin an old version of maturin
+# instead, but we cannot respect this; we must use the system version.  As long
+# as we are using the *PyPI sdist* as our source, pyproject.toml has a static
+# version field, and we don’t need to patch in the rejected PR. However, we
+# must still unpin maturin via a partial revert – just the part that matters to
+# us, in pyproject.toml – of:
+#
+#    https://github.com/ijl/orjson/commit/9a4ef46991ad205b9a92cb6fdcb123c7ff72b640
+Patch:          orjson-3.10.13-unpin-maturin.patch
+
 BuildRequires:  tomcli
 BuildRequires:  python3-devel
 BuildRequires:  %{py3_dist pytest-forked}
diff --git a/sources b/sources
index 6bdca07..e15eaa8 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (orjson-3.10.12.tar.gz) = 089420645ef4a54674436ebc4f49ba67fda4fff716c949e03a4af402fdd817decd066c508b18c19ac24b634e7173b37924ac1c2180679a92551884957d4b11ae
+SHA512 (orjson-3.10.13.tar.gz) = 84ee3a42654e5576190dd115483db1e3a9a151b22de79b99b497c2e181adbd5e33a4aa77bb5f72394e0947887e657c5dc6380e852dddb4a5e95b47e72486b18c