diff --git a/Build/Changes.txt b/Build/Changes.txt
index e68fadc42..9a54c9917 100644
--- a/Build/Changes.txt
+++ b/Build/Changes.txt
@@ -34,13 +34,14 @@ SUP - (S)et(UP) / Installer Package
 
 
 ========================================================
-Current BETA/RC Version 5.20.1219.(build_#) (2020-12-19)
+Current BETA/RC Version 5.20.1221.(build_#) (2020-12-21)
 ========================================================
 
 --------------------------------------------------------
 NEW:
 --------------------------------------------------------
 [.xxx.x]- .
+[1221.1]- TinyExpr: additional number parsing for binary (0b...) and octal (0o...) number formats.
 [1109.1]- Extension ".pkb" to SQL Lexer.
 [1012.1]- Support for Windows 10 20H2 Version 2009 (Build 19042).
 [1004.1]- Open/Save file explorer dialog: populate file filter with current lexer supported file extensions.
diff --git a/Versions/day.txt b/Versions/day.txt
index 9e3410c09..3acca38af 100644
--- a/Versions/day.txt
+++ b/Versions/day.txt
@@ -1 +1 @@
-1219
+1221
diff --git a/res/Notepad3.exe.manifest.conf b/res/Notepad3.exe.manifest.conf
index 7730946ec..26632a52e 100644
--- a/res/Notepad3.exe.manifest.conf
+++ b/res/Notepad3.exe.manifest.conf
@@ -3,7 +3,7 @@
   <assemblyIdentity
     name="Notepad3"
     processorArchitecture="*"
-    version="5.20.1219.1"
+    version="5.20.1221.1"
     type="win32"
   />
   <description>Notepad3 beta</description>
diff --git a/src/VersionEx.h b/src/VersionEx.h
index fb31fd6f2..a4e81e51b 100644
--- a/src/VersionEx.h
+++ b/src/VersionEx.h
@@ -8,7 +8,7 @@
 #define SAPPNAME "Notepad3"
 #define VERSION_MAJOR 5
 #define VERSION_MINOR 20
-#define VERSION_REV 1219
+#define VERSION_REV 1221
 #define VERSION_BUILD 1
 #define SCINTILLA_VER 446
 #define ONIGURUMA_REGEX_VER 6.9.6