diff --git a/CHANGELOG.md b/CHANGELOG.md
index eeefa45..dd2a99c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,14 +1,15 @@
 Changelog
 =========
 
-0.5.0 pre
----------
+0.5.0
+-----
 
  - Fix crash on open in use serial device
  - Use a Defaults module for all settings -
    ignores old .ini settings
  - Refactoring and unifying Chart classes
  - No more automatic update checks (more privacy)
+ - Corrected error handling in NanaVNA\_V2 code 
 
 0.4.0
 -----
diff --git a/NanoVNASaver/About.py b/NanoVNASaver/About.py
index 94e0c14..18e1ca4 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"
+VERSION = "0.5.0"
 VERSION_URL = (
     "https://raw.githubusercontent.com/"
     "NanoVNA-Saver/nanovna-saver/master/NanoVNASaver/About.py")
diff --git a/README.md b/README.md
index d4c5dc0..b0c89b0 100644
--- a/README.md
+++ b/README.md
@@ -24,6 +24,7 @@ Latest Changes
    ignores old .ini settings
  - Refactoring and unifying Chart classes
  - No more automatic update checks (more privacy)
+ - Corrected error handling in NanaVNA\_V2 code 
 
 ### Changes in 0.4.0
 
@@ -33,18 +34,6 @@ Latest Changes
  - Fix linux binary build
  - Many bugfixes
 
-### Changes in v0.3.10
-
-- Default Band ranges for 5 and 9cm
-- Layout should fit on smaller screens
-- Fixed fixed axis settings
-- Show VNA type in port selector
-- Recognise tinySA (screenshot only)
-- Some more cables in TDR
-- Reference plane applied after calibration
-- Calibration fixes by DiSlord
-
-
 Introduction
 ------------
 
@@ -83,7 +72,7 @@ Running the application
 
 The software was written in Python on Windows, using Pycharm, and the modules
 PyQT5, numpy, scipy and pyserial.
-Main development is currently done on Linux (Mint 20.3 Cinnamon)
+Main development is currently done on Linux (Mint 21 "Vanessa" Cinnamon)
 
 ### Binary releases