diff --git a/CHANGELOG.md b/CHANGELOG.md
index 319f0a4..2bf829d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,11 @@
 ## Release Notes ##
 
 
+### 0.1.23 [2021-12-11] ###
+
+* Fixed slow tab switching when used on ZFS
+
+
 ### 0.1.22 [2021-11-05] ###
 
 * Recompiled for QT 5.12.8
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 3f59899..f17ce7a 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -5,7 +5,8 @@ Welcome and thank you for your interest in contributing.
 
 ### Compiling Code
 
-Project uses Qt 5.12.8 and Qt Creator is the preferred development environment.
+Project uses Qt 5.12.8 (Linux) and Qt 5.15.2 (Windows) with Qt Creator being the
+preferred development environment.
 
 All code is situated in `src` directory.
 
diff --git a/WinMake.sh b/WinMake.sh
index d4133eb..c9365c6 100644
--- a/WinMake.sh
+++ b/WinMake.sh
@@ -1,7 +1,7 @@
 #!/bin/bash
 
 QT_PATH='/c/Qt'
-QT_VERSION=5.14.2
+QT_VERSION=5.15.2
 CERTIFICATE_THUMBPRINT="e9b444fffb1375ece027e40d8637b6da3fdaaf0e"
 TIMESTAMP_URL="http://timestamp.digicert.com"  #http://timestamp.comodoca.com/rfc3161
 
diff --git a/src/QText.pro b/src/QText.pro
index ab1e08f..bbbe69b 100644
--- a/src/QText.pro
+++ b/src/QText.pro
@@ -1,6 +1,6 @@
 APP_PRODUCT = "QText"
 APP_COMPANY = "Josip Medved"
-APP_VERSION = "0.1.22"
+APP_VERSION = "0.1.23"
 APP_COPYRIGHT = "Copyright 2004 Josip Medved <jmedved@jmedved.com>"
 APP_DESCRIPTION = "Note taking utility with auto-save."