diff --git a/pkgs/tools/misc/diffoscope/default.nix b/pkgs/tools/misc/diffoscope/default.nix
index 85e148049fa..7daff3641a0 100644
--- a/pkgs/tools/misc/diffoscope/default.nix
+++ b/pkgs/tools/misc/diffoscope/default.nix
@@ -92,6 +92,7 @@ python3.pkgs.buildPythonApplication rec {
 
   patches = [
     ./ignore_links.patch
+    ./fix-test_fit.patch
   ];
 
   postPatch = ''
diff --git a/pkgs/tools/misc/diffoscope/fix-test_fit.patch b/pkgs/tools/misc/diffoscope/fix-test_fit.patch
new file mode 100644
index 00000000000..cd275ea9e91
--- /dev/null
+++ b/pkgs/tools/misc/diffoscope/fix-test_fit.patch
@@ -0,0 +1,58 @@
+From f1e9fa32c925fe7fb3cd825a02dcff52d305d845 Mon Sep 17 00:00:00 2001
+From: Andrew Marshall <andrew@johnandrewmarshall.com>
+Date: Mon, 28 Aug 2023 19:03:38 -0400
+Subject: [PATCH] Fix test_fit with file 5.45
+
+See also 435a8fe9a201a7e74e705e06cc56b66fa6cb4af9.
+---
+ tests/comparators/test_fit.py | 20 +++++++++++++-------
+ 1 file changed, 13 insertions(+), 7 deletions(-)
+
+diff --git a/tests/comparators/test_fit.py b/tests/comparators/test_fit.py
+index d8478c00..47258a3e 100644
+--- a/tests/comparators/test_fit.py
++++ b/tests/comparators/test_fit.py
+@@ -27,7 +27,11 @@
+ from diffoscope.comparators.utils.specialize import specialize
+ 
+ from ..utils.data import data, assert_diff, load_fixture
+-from ..utils.tools import skip_unless_tools_exist, skip_unless_tool_is_at_least
++from ..utils.tools import (
++    skip_unless_file_version_is_at_least,
++    skip_unless_tool_is_at_least,
++    skip_unless_tools_exist,
++)
+ from ..utils.nonexisting import assert_non_existing
+ 
+ cpio1 = load_fixture("test1.cpio")
+@@ -124,19 +128,21 @@ def test_nested_listing(nested_differences):
+ @skip_unless_tools_exist("cpio")
+ @skip_unless_tool_is_at_least("dumpimage", dumpimage_version, "2021.01")
+ @skip_unless_tools_exist("fdtdump")
++@skip_unless_file_version_is_at_least("5.45")
+ def test_nested_symlink(nested_differences):
+-    assert nested_differences[1].source1 == "dir/link"
+-    assert nested_differences[1].comment == "symlink"
+-    assert_diff(nested_differences[1], "symlink_expected_diff")
++    assert nested_differences[2].source1 == "dir/link"
++    assert nested_differences[2].comment == "symlink"
++    assert_diff(nested_differences[2], "symlink_expected_diff")
+ 
+ 
+ @skip_unless_tools_exist("cpio")
+ @skip_unless_tool_is_at_least("dumpimage", dumpimage_version, "2021.01")
+ @skip_unless_tools_exist("fdtdump")
++@skip_unless_file_version_is_at_least("5.45")
+ def test_nested_compressed_files(nested_differences):
+-    assert nested_differences[2].source1 == "dir/text"
+-    assert nested_differences[2].source2 == "dir/text"
+-    assert_diff(nested_differences[2], "text_ascii_expected_diff")
++    assert nested_differences[3].source1 == "dir/text"
++    assert nested_differences[3].source2 == "dir/text"
++    assert_diff(nested_differences[3], "text_ascii_expected_diff")
+ 
+ 
+ @skip_unless_tools_exist("cpio")
+-- 
+2.41.0
+