diff --git a/tools/autoupdate_app_sources/autoupdate_app_sources.py b/tools/autoupdate_app_sources/autoupdate_app_sources.py
index f9297c5..9f6fe70 100755
--- a/tools/autoupdate_app_sources/autoupdate_app_sources.py
+++ b/tools/autoupdate_app_sources/autoupdate_app_sources.py
@@ -274,7 +274,7 @@ class AppAutoUpdater:
             elif tag.startswith("release-"):
                 t_to_check = tag.split("-", 1)[-1].replace("-", ".")
 
-            if re.match(r"^v?[\d\.]*\-?\d$", t_to_check):
+            if re.match(r"^v?\d+(\.\d+)*(\-\d+)?$", t_to_check):
                 return AppAutoUpdater.tag_to_int_tuple(t_to_check)
             print(f"Ignoring tag {t_to_check}, doesn't look like a version number")
             return None
@@ -300,7 +300,7 @@ class AppAutoUpdater:
 
     @staticmethod
     def tag_to_int_tuple(tag: str) -> tuple[int, ...]:
-        tag = tag.strip("v").replace("-", ".").strip(".")
+        tag = tag.lstrip("v").replace("-", ".").rstrip(".")
         int_tuple = tag.split(".")
         assert all(i.isdigit() for i in int_tuple), f"Cant convert {tag} to int tuple :/"
         return tuple(int(i) for i in int_tuple)