diff --git a/star_rail/__init__.py b/star_rail/__init__.py
index 5a1d580..f3092be 100644
--- a/star_rail/__init__.py
+++ b/star_rail/__init__.py
@@ -1,6 +1,6 @@
 from star_rail.utils.version import get_version
 
-VERSION = (2, 2, 7)
+VERSION = (2, 2, 7, "final", 0)
 
 
 __author__ = "cntvc"
diff --git a/star_rail/module/record/srgf.py b/star_rail/module/record/srgf.py
index d12824f..fecb803 100644
--- a/star_rail/module/record/srgf.py
+++ b/star_rail/module/record/srgf.py
@@ -17,7 +17,7 @@
 __all__ = ["convert_to_gacha_record_data", "convert_to_srgf"]
 
 
-SRGF_VERSION = (1, 0)
+SRGF_VERSION = (1, 0, 0, "final", 0)
 
 
 def get_srgf_version(srgf_version):
diff --git a/star_rail/utils/version.py b/star_rail/utils/version.py
index b761722..35a8bd1 100644
--- a/star_rail/utils/version.py
+++ b/star_rail/utils/version.py
@@ -1,13 +1,44 @@
+import re
 from itertools import zip_longest
 
 __all__ = ["get_version", "compare_versions", "get_version_tuple"]
 
 
-def get_version(version: tuple[int, ...] = None):
-    """(1, 0, 0) -> '1.0.0'"""
+def get_version(version: tuple[int, int, int, str, int] = None):
+    """Return a PEP 440-compliant version number from VERSION."""
+
+    version = get_complete_version(version)
+
+    # Build the two parts of the version number:
+    # main = X.Y[.Z]
+    # sub = [.devN] - for dev releases
+
+    main = get_main_version(version)
+
+    sub = ""
+    if version[3] == "dev":
+        sub = ".dev" + str(version[4])
+
+    return main + sub
+
+
+def get_main_version(version: tuple[int, int, int, str, int] = None):
+    """Return main version (X.Y[.Z]) from VERSION."""
+    version = get_complete_version(version)
+    parts = 2 if version[2] == 0 else 3
+    return ".".join(str(x) for x in version[:parts])
+
+
+def get_complete_version(version: tuple[int, int, int, str, int] = None):
+    """
+    check for correctness of the tuple provided.
+    """
     if version is None:
         from star_rail import VERSION as version
-    return ".".join(str(x) for x in version)
+    assert len(version) == 5
+    assert version[3] in ("dev", "final")
+
+    return version
 
 
 def compare_versions(version1: str, version2: str):
@@ -28,8 +59,20 @@ def compare_versions(version1: str, version2: str):
     return 0
 
 
+version_component_re = re.compile(r"(\d+|[a-z]+|\.)")
+
+
 def get_version_tuple(version: str) -> tuple[int, ...]:
     """
     Return a tuple of version numbers (e.g. (1, 2, 3)) from the version string (e.g. '1.2.3').
     """
-    return tuple(map(int, version.split(".")))
+    numbers = []
+    for item in version_component_re.split(version):
+        if item and item != ".":
+            try:
+                components = int(item)
+            except ValueError:
+                break
+            else:
+                numbers.append(components)
+    return tuple(numbers)
diff --git a/tests/utils/test_version.py b/tests/utils/test_version.py
index aa60f8a..9e84060 100644
--- a/tests/utils/test_version.py
+++ b/tests/utils/test_version.py
@@ -9,12 +9,19 @@ def test_compare_version(self):
         self.assertEqual(compare_versions("1.0.0", "1.0.11"), -1)
         self.assertEqual(compare_versions("1.0.0", "1.10.0"), -1)
         self.assertEqual(compare_versions("1.0.0", "11.0.11"), -1)
+        self.assertEqual(compare_versions("1.0.0", "1.1.0.dev1"), -1)
+        self.assertEqual(compare_versions("1.0.0dev1", "1.1.0.dev1"), -1)
 
         self.assertEqual(compare_versions("1.0.0", "1.0.0"), 0)
         self.assertEqual(compare_versions("11.0.0", "11.0.0"), 0)
         self.assertEqual(compare_versions("1.10.120", "1.10.120"), 0)
+        self.assertEqual(compare_versions("1.1.1", "1.1.1dev1"), 0)
+        self.assertEqual(compare_versions("1.1.1dev2", "1.1.1dev2"), 0)
 
         self.assertEqual(compare_versions("0.0.2", "0.0.1"), 1)
         self.assertEqual(compare_versions("0.10.0", "0.0.1"), 1)
         self.assertEqual(compare_versions("10.0.0", "0.0.1"), 1)
         self.assertEqual(compare_versions("100.10.2", "100.10.1"), 1)
+        self.assertEqual(compare_versions("100.10.2", "100.10.1"), 1)
+        self.assertEqual(compare_versions("1.1.1dev1", "1.1.0dev1"), 1)
+        self.assertEqual(compare_versions("1.1.1dev3", "1.1.0dev1"), 1)