diff --git a/NanoVNASaver/About.py b/NanoVNASaver/About.py
index ca304ca8..94e0c143 100644
--- a/NanoVNASaver/About.py
+++ b/NanoVNASaver/About.py
@@ -17,7 +17,7 @@
 #  You should have received a copy of the GNU General Public License
 #  along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
-VERSION = "0.4.0-pre"
+VERSION = "0.4.0"
 VERSION_URL = (
     "https://raw.githubusercontent.com/"
     "NanoVNA-Saver/nanovna-saver/master/NanoVNASaver/About.py")
diff --git a/NanoVNASaver/Version.py b/NanoVNASaver/Version.py
index 01fe5caa..3ab85249 100644
--- a/NanoVNASaver/Version.py
+++ b/NanoVNASaver/Version.py
@@ -15,8 +15,10 @@
 #
 #  You should have received a copy of the GNU General Public License
 #  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+from lib2to3.pytree import type_repr
 import logging
 import re
+from typing import Type
 
 logger = logging.getLogger(__name__)
 
@@ -25,8 +27,8 @@ class Version:
     RXP = re.compile(r"""^
         \D*
         (?P<major>\d+)\.
-        (?P<minor>\d+)\.
-        (?P<revision>\d+)
+        (?P<minor>\d+)\.?
+        (?P<revision>\d+)?
         (?P<note>.*)
         $""", re.VERBOSE)
 
@@ -41,6 +43,8 @@ def __init__(self, vstring: str = "0.0.0"):
             self.data = Version.RXP.search(vstring).groupdict()
             for name in ("major", "minor", "revision"):
                 self.data[name] = int(self.data[name])
+        except TypeError:
+            self.data["revision"] = 0
         except AttributeError:
             logger.error("Unable to parse version: %s", vstring)