diff --git a/Reject-invalid-escapes-in-strings.patch b/Reject-invalid-escapes-in-strings.patch
new file mode 100644
index 0000000..0479a82
--- /dev/null
+++ b/Reject-invalid-escapes-in-strings.patch
@@ -0,0 +1,34 @@
+From 09b300acf1142fec5de429d3521c09afad0832c6 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Martin=20Vejn=C3=A1r?= <vejnar.martin@gmail.com>
+Date: Sat, 27 Oct 2018 21:57:01 +0200
+Subject: [PATCH] Reject invalid escapes in strings
+
+Fixes `invalid-escape` test.
+---
+ pytoml/parser.py | 6 +++---
+ 1 file changed, 3 insertions(+), 3 deletions(-)
+
+diff --git a/pytoml/parser.py b/pytoml/parser.py
+index 6d4d483..b4f7646 100644
+--- a/pytoml/parser.py
++++ b/pytoml/parser.py
+@@ -180,13 +180,13 @@ _ws_re = re.compile(r'[ \t]*')
+ def _p_ws(s):
+     s.expect_re(_ws_re)
+ 
+-_escapes = { 'b': '\b', 'n': '\n', 'r': '\r', 't': '\t', '"': '"', '\'': '\'',
+-    '\\': '\\', '/': '/', 'f': '\f' }
++_escapes = { 'b': '\b', 'n': '\n', 'r': '\r', 't': '\t', '"': '"',
++    '\\': '\\', 'f': '\f' }
+ 
+ _basicstr_re = re.compile(r'[^"\\\000-\037]*')
+ _short_uni_re = re.compile(r'u([0-9a-fA-F]{4})')
+ _long_uni_re = re.compile(r'U([0-9a-fA-F]{8})')
+-_escapes_re = re.compile('[bnrt"\'\\\\/f]')
++_escapes_re = re.compile(r'[btnfr\"\\]')
+ _newline_esc_re = re.compile('\n[ \t\n]*')
+ def _p_basicstr_content(s, content=_basicstr_re):
+     res = []
+-- 
+2.27.0
+
diff --git a/python-pytoml.spec b/python-pytoml.spec
index e8a8e47..c51152b 100644
--- a/python-pytoml.spec
+++ b/python-pytoml.spec
@@ -2,13 +2,14 @@
 
 Name:           python-%{github_name}
 Version:        0.1.18
-Release:        5
+Release:        6
 Summary:        Parser for TOML
 License:        MIT
 URL:            https://github.com/avakar/%{github_name}
 Source0:        https://github.com/avakar/%{github_name}/archive/v%{version}/%{github_name}-%{version}.tar.gz
 Patch0:         Add-.vscode-and-.pytest_cache-to-.gitignore.patch
 Patch1:         Fix-datetime-serialization.patch
+Patch2:         Reject-invalid-escapes-in-strings.patch
 BuildArch:      noarch
 
 %global my_description \
@@ -44,6 +45,9 @@ BuildRequires:  python3-setuptools
 %{python3_sitelib}/%{github_name}/
 
 %changelog
+* Fri Dec 29 2023 fandehui <fandehui@xfusion.com> - 0.1.18-6
+- Reject invalid escapes in strings
+
 * Fri Dec 29 2023 fandehui <fandehui@xfusion.com> - 0.1.18-5
 - Fix datetime serialization