diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2545de32..1094e3c6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,12 @@ This document logs the changes per release of TWCManager.
 
 ## v1.3.0 - Latest Development version
 
+## v1.2.6 - 2022-02-28
+
+  * Bugfixes:
+     * (@ngardiner) - Fix for exception regarding serialization of bytes object in JSON data for Tesla Auth Flow
+  * (@ngardiner) - First revision of self-update mechanism for TWCManager - will be activated once v1.3.0 is released
+
 ## v1.2.5 - 2022-02-27
 
   * Bugfixes:
diff --git a/README.md b/README.md
index 5f15a84a..97d70bc1 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # TWCManager
 
-[![Stable Release](https://img.shields.io/badge/Stable_Release-1.2.5-blue)](https://github.com/ngardiner/TWCManager/releases/tag/v1.2.5)
+[![Stable Release](https://img.shields.io/badge/Stable_Release-1.2.6-blue)](https://github.com/ngardiner/TWCManager/releases/tag/v1.2.6)
 [![Development Release](https://img.shields.io/badge/Devel_Release-1.3.0-green.svg)](https://github.com/ngardiner/TWCManager/tree/main)
 ![Build Status](https://github.com/ngardiner/TWCManager/actions/workflows/test_suite.yml/badge.svg)
 ![GitHub commits](https://img.shields.io/github/commit-activity/m/ngardiner/TWCManager)
diff --git a/lib/TWCManager/Control/HTTPControl.py b/lib/TWCManager/Control/HTTPControl.py
index 9db1ac8d..f70825f2 100644
--- a/lib/TWCManager/Control/HTTPControl.py
+++ b/lib/TWCManager/Control/HTTPControl.py
@@ -812,6 +812,11 @@ def do_GET(self):
 
             if self.url.path == "/upgrade":
                 # This is extremely beta
+                # Attempt a self-update of TWCManager by calling pip
+                self.send_response(200)
+                self.send_header("Content-type", "text/html")
+                self.end_headers()
+
                 self.template = self.templateEnv.get_template("upgrade.html.j2")
                 page = self.template.render(self.__dict__)
 
@@ -826,10 +831,10 @@ def do_GET(self):
                             "--upgrade",
                             "TWCManager",
                         ]
-                    )
+                    ).decode("UTF-8")
                 except subprocess.CalledProcessError as error:
                     page += "An error occurred attempting upgrade: " + str(
-                        error.output()
+                        error
                     )
 
                 self.wfile.write(page.encode("utf-8"))
diff --git a/lib/TWCManager/Control/themes/Default/navbar.html.j2 b/lib/TWCManager/Control/themes/Default/navbar.html.j2
index 28e83243..cb2f5058 100644
--- a/lib/TWCManager/Control/themes/Default/navbar.html.j2
+++ b/lib/TWCManager/Control/themes/Default/navbar.html.j2
@@ -19,7 +19,7 @@
         <span class='navbar-text'>v{{ master.version }}</span>
         {% if checkForUpdates() %}
             &nbsp;
-            <span class='navbar-text'>(v{{ checkForUpdates() }} Available)</span>
+            <span class='navbar-text'>(<a href="/upgradePrompt">v{{ checkForUpdates() }} Available</a>)</span>
         {% endif %}
    </div>
 </nav>
diff --git a/lib/TWCManager/TWCMaster.py b/lib/TWCManager/TWCMaster.py
index 7d341fd3..85fdc460 100644
--- a/lib/TWCManager/TWCMaster.py
+++ b/lib/TWCManager/TWCMaster.py
@@ -67,7 +67,7 @@ class TWCMaster:
     teslaLoginAskLater = False
     TWCID = None
     updateVersion = False
-    version = "1.2.5"
+    version = "1.2.6"
 
     # TWCs send a seemingly-random byte after their 2-byte TWC id in a number of
     # messages. I call this byte their "Sign" for lack of a better term. The byte
diff --git a/setup.py b/setup.py
index 05cb7e91..732dac6f 100755
--- a/setup.py
+++ b/setup.py
@@ -4,7 +4,7 @@
 
 setup(
     name="TWCManager",
-    version="1.2.5",
+    version="1.2.6",
     package_dir={"": "lib"},
     packages=find_namespace_packages(where="lib"),
     python_requires=">= 3.6",