diff --git a/arbor-0.9.0-pybind11-3.0.patch b/arbor-0.9.0-pybind11-3.0.patch
deleted file mode 100644
index 6fc58db..0000000
--- a/arbor-0.9.0-pybind11-3.0.patch
+++ /dev/null
@@ -1,22 +0,0 @@
-diff -Naur arbor-0.9.0-original/python/pyarb.hpp arbor-0.9.0/python/pyarb.hpp
---- arbor-0.9.0-original/python/pyarb.hpp	2023-08-10 10:47:38.000000000 +0100
-+++ arbor-0.9.0/python/pyarb.hpp	2025-11-03 08:24:00.093256311 +0000
-@@ -13,18 +13,6 @@
- 
- #include <pybind11/pybind11.h>
- 
--// Version check
--#define mk_tok(x) #x
--#define mk_ver(M, m, p) mk_tok(M) "." mk_tok(m) "." mk_tok(p)
--#define PB11_ERR(M, m, p) "Required version of pybind11 is 2.8.1 <= version < 3.0.0 Found " mk_ver(M, m, p)
--static_assert((PYBIND11_VERSION_HEX >= 0x02080100)
--              &&
--              (PYBIND11_VERSION_HEX  < 0x03000000),
--              PB11_ERR(PYBIND11_VERSION_MAJOR, PYBIND11_VERSION_MINOR, PYBIND11_VERSION_PATCH));
--#undef PB11_ERR
--#undef mk_ver
--#undef mk_tok
--
- namespace pyarb {
- 
- // Sample recorder object interface.
diff --git a/arbor.spec b/arbor.spec
index 8e76de4..ebd3875 100644
--- a/arbor.spec
+++ b/arbor.spec
@@ -49,9 +49,6 @@ Patch:          fix-missing-includes.patch
 # These were eventually included in
 # 76120d16c00ae67128c3c69421ab712f985f3445, along with many other changes.
 Patch:          0001-Fix-a-few-typos-that-cause-failure-to-compile-with-G.patch
-# Remove the hard-coded pybind11 version check so that we can build with
-# pybind11 3.0; this is part of https://github.com/arbor-sim/arbor/pull/2481.
-Patch:          arbor-0.9.0-pybind11-3.0.patch
 
 # Random123 does not support:
 #   mips64r2 mips32r2 s390