diff --git a/Build/Changes.txt b/Build/Changes.txt
index 460d3ef6a..66750d207 100644
--- a/Build/Changes.txt
+++ b/Build/Changes.txt
@@ -33,7 +33,7 @@ UCD - (UCD)ARDET is an Encoding Detector Library
 
 
 ========================================================
-Current BETA/RC Version 5.21.818.(build_#) (2021-08-18)
+Current BETA/RC Version 5.21.820.(build_#) (2021-08-20)
 ========================================================
 
 --------------------------------------------------------
@@ -160,6 +160,7 @@ CHANGES Versions in Tools or Libraries:
 FIXES:
 --------------------------------------------------------
 [.###.#]- .
+[.820.1]- Specify "/utf-8" compiler option for "Scintilla, Lexilla and grepWinNP3" projects.
 [.813.1]- "grepWinNP3" project: post build step - xcopy .lang files to desired build output dir (GRE).
 [.813.1]- Remove obsolete (by SCI Lib v5.1.1) settings.
 [.809.2]- Size of visible whitespace style.
diff --git a/Versions/day.txt b/Versions/day.txt
index 68c7a4170..58621e61a 100644
--- a/Versions/day.txt
+++ b/Versions/day.txt
@@ -1 +1 @@
-818
+820
diff --git a/res/Notepad3.exe.manifest.conf b/res/Notepad3.exe.manifest.conf
index fa043380a..c881e6f7c 100644
--- a/res/Notepad3.exe.manifest.conf
+++ b/res/Notepad3.exe.manifest.conf
@@ -3,7 +3,7 @@
   <assemblyIdentity
     name="Rizonesoft.Notepad3"
     processorArchitecture="*"
-    version="5.21.818.1"
+    version="5.21.820.1"
     type="win32"
   />
   <description>Notepad3 rc</description>
diff --git a/src/VersionEx.h b/src/VersionEx.h
index 4d49b82bb..f2a3c40d4 100644
--- a/src/VersionEx.h
+++ b/src/VersionEx.h
@@ -8,7 +8,7 @@
 #define SAPPNAME "Notepad3"
 #define VERSION_MAJOR 5
 #define VERSION_MINOR 21
-#define VERSION_REV 818
+#define VERSION_REV 820
 #define VERSION_BUILD 1
 #define SCINTILLA_VER 511
 #define LEXILLA_VER 511