diff --git a/CMakeLists.txt b/CMakeLists.txt
index a7aca94f..2b5656e2 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,7 +1,13 @@
 cmake_minimum_required(VERSION 3.7)
 
+set(BUILD_NUMBER CACHE STRING "The number of the current build.")
+
+if ("${BUILD_NUMBER}" STREQUAL "")
+	set(BUILD_NUMBER "0")
+endif()
+
 project("SoftEther VPN"
-  VERSION 5.01.9674
+  VERSION "5.01.${BUILD_NUMBER}"
   LANGUAGES C
 )
 
diff --git a/version.py b/version.py
new file mode 100644
index 00000000..6ccacd27
--- /dev/null
+++ b/version.py
@@ -0,0 +1,28 @@
+import argparse
+
+def main():
+	parser = argparse.ArgumentParser()
+	parser.add_argument('-n', '--newline', action = 'store_true', help = 'Break line after printing version')
+	args = parser.parse_args()
+
+	end = None if args.newline else ''
+
+	version = None
+	with open('CMakeLists.txt', 'r') as file:
+		for line in file:
+			if 'VERSION "' in line and '.${BUILD_NUMBER}"' in line:
+				line = line.replace('VERSION "', '')
+				line = line[0 : line.find('.${BUILD_NUMBER}"')].strip()
+				version = line
+				break
+
+	if version is None:
+		raise Exception('Unable to read version from CMakeLists.txt')
+
+	if len(version) == 0 or not '.' in version:
+			raise Exception('Bad version: "{0}"'.format(version))
+
+	print(version, end = end)
+
+if __name__ == '__main__':
+	main()