diff --git a/update-sha1sums.py b/update-sha1sums.py
new file mode 100644
index 00000000..9987aeeb
--- /dev/null
+++ b/update-sha1sums.py
@@ -0,0 +1,73 @@
+#!/usr/bin/env python
+#
+# Copyright (C) 2016 The CyanogenMod Project
+# Copyright (C) 2017-2020 The LineageOS Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+import os
+import sys
+from hashlib import sha1
+
+device = 'raphael'
+vendor = 'xiaomi'
+
+with open('proprietary-files.txt', 'r') as f:
+    lines = f.read().splitlines()
+vendorPath = '../../../vendor/' + vendor + '/' + device + '/proprietary'
+needSHA1 = False
+
+
+def cleanup():
+    for index, line in enumerate(lines):
+        # Skip empty or commented lines
+        if len(line) == 0 or line[0] == '#' or '|' not in line:
+            continue
+
+        # Drop SHA1 hash, if existing
+        lines[index] = line.split('|')[0]
+
+
+def update():
+    for index, line in enumerate(lines):
+        # Skip empty lines
+        if len(line) == 0:
+            continue
+
+        # Check if we need to set SHA1 hash for the next files
+        if line[0] == '#':
+            needSHA1 = (' - from' in line)
+            continue
+
+        if needSHA1:
+            # Remove existing SHA1 hash
+            line = line.split('|')[0]
+
+            filePath = line.split(';')[0].split(':')[-1]
+            if filePath[0] == '-':
+                filePath = filePath[1:]
+
+            with open(os.path.join(vendorPath, filePath), 'rb') as f:
+                hash = sha1(f.read()).hexdigest()
+
+            lines[index] = '%s|%s' % (line, hash)
+
+
+if len(sys.argv) == 2 and sys.argv[1] == '-c':
+    cleanup()
+else:
+    update()
+
+with open('proprietary-files.txt', 'w') as file:
+    file.write('\n'.join(lines) + '\n')