diff --git a/rpmlint-1.10-py37mtime.patch b/rpmlint-1.10-py37mtime.patch
new file mode 100644
index 0000000..ded068d
--- /dev/null
+++ b/rpmlint-1.10-py37mtime.patch
@@ -0,0 +1,57 @@
+diff -up rpmlint-rpmlint-1.10/FilesCheck.py.py37mtime rpmlint-rpmlint-1.10/FilesCheck.py
+--- rpmlint-rpmlint-1.10/FilesCheck.py.py37mtime	2018-06-02 14:29:53.035453468 -0400
++++ rpmlint-rpmlint-1.10/FilesCheck.py	2018-06-02 14:32:55.430860108 -0400
+@@ -377,6 +377,27 @@ def py_demarshal_long(b):
+     return (b[0] + (b[1] << 8) + (b[2] << 16) + (b[3] << 24))
+ 
+ 
++def pyc_magic_from_chunk(chunk):
++    """From given chunk (beginning of the file), return Python magic number"""
++    return py_demarshal_long(chunk[:4]) & 0xffff
++
++
++def pyc_mtime_from_chunk(chunk):
++    """From given chunk (beginning of the file), return mtime or None
++
++    From Python 3.7, mtime is not always present.
++
++    See https://www.python.org/dev/peps/pep-0552/#specification
++    """
++    magic = pyc_magic_from_chunk(chunk)
++    second = py_demarshal_long(chunk[4:8])
++    if magic >= _python_magic_values['3.7'][0]:
++        if second == 0:
++            return py_demarshal_long(chunk[8:12])
++        return None  # No mtime saved, TODO check hashes instead
++    return second
++
++
+ def python_bytecode_to_script(path):
+     """
+     Given a python bytecode path, give the path of the .py file
+@@ -729,7 +750,7 @@ class FilesCheck(AbstractCheck.AbstractC
+                         if chunk:
+                             # Verify that the magic ABI value embedded in the
+                             # .pyc header is correct
+-                            found_magic = py_demarshal_long(chunk[:4]) & 0xffff
++                            found_magic = pyc_magic_from_chunk(chunk)
+                             exp_magic, exp_version = get_expected_pyc_magic(f)
+                             if exp_magic and found_magic not in exp_magic:
+                                 found_version = 'unknown'
+@@ -752,13 +773,14 @@ class FilesCheck(AbstractCheck.AbstractC
+ 
+                             # Verify that the timestamp embedded in the .pyc
+                             # header matches the mtime of the .py file:
+-                            pyc_timestamp = py_demarshal_long(chunk[4:8])
++                            pyc_timestamp = pyc_mtime_from_chunk(chunk)
+                             # If it's a symlink, check target file mtime.
+                             srcfile = pkg.readlink(files[source_file])
+                             if not srcfile:
+                                 printWarning(
+                                     pkg, 'python-bytecode-without-source', f)
+-                            elif pyc_timestamp != srcfile.mtime:
++                            elif (pyc_timestamp is not None and
++                                  pyc_timestamp != srcfile.mtime):
+                                 cts = datetime.fromtimestamp(
+                                     pyc_timestamp).isoformat()
+                                 sts = datetime.fromtimestamp(
diff --git a/rpmlint.spec b/rpmlint.spec
index e620240..a11ce57 100644
--- a/rpmlint.spec
+++ b/rpmlint.spec
@@ -16,7 +16,7 @@
 
 Name:           rpmlint
 Version:        1.10
-Release:        12%{?dist}
+Release:        13%{?dist}
 Summary:        Tool for checking common errors in RPM packages
 Group:          Development/Tools
 License:        GPLv2
@@ -36,6 +36,8 @@ Patch0:         rpmlint-1.10-ignore-debuginfo-useless-provides.patch
 Patch1:         rpmlint-1.10-flake-cleanups.patch
 # https://github.com/rpm-software-management/rpmlint/commit/d59bc2a
 Patch2:         rpmlint-1.10-missing-files-exception.patch
+# https://github.com/rpm-software-management/rpmlint/commit/e52dcc73bab5c4310e9bb773e6aedea020e340ff
+Patch3:		rpmlint-1.10-py37mtime.patch
 BuildArch:      noarch
 %if %{with python3}
 BuildRequires:  python3-devel
@@ -89,6 +91,7 @@ and source packages as well as spec files can be checked.
 %patch0 -p1 -b .debuginfo-useless-provides
 %patch1 -p1 -b .flake
 %patch2 -p1 -b .missing-files
+%patch3 -p1 -b .py37mtime
 sed -i -e /MenuCheck/d Config.py
 cp -p config config.example
 install -pm 644 %{SOURCE3} config
@@ -138,6 +141,9 @@ make check PYTHON=%{python} PYTEST=%{pytest} FLAKE8=%{flake8}
 %{_mandir}/man1/rpmlint.1*
 
 %changelog
+* Sat Jun  2 2018 Tom Callaway <spot@fedoraproject.org> 1.10-13
+- apply upstream fix for python 3.7 mtime handling
+
 * Thu May 03 2018 Todd Zullinger <tmz@pobox.com> - 1.10-12
 - Properly handle the exception on missing files (bz1574509)
 - Explicitly disable the non-standard-group check