diff --git a/configure.ac b/configure.ac
index 8f0b8c7563..2a230d4892 100644
--- a/configure.ac
+++ b/configure.ac
@@ -4,7 +4,7 @@ dnl Copyright (c) 2007-2019, The Tor Project, Inc.
 dnl See LICENSE for licensing information
 
 AC_PREREQ([2.63])
-AC_INIT([tor],[0.4.8.7-dev])
+AC_INIT([tor],[0.4.8.8-dev])
 AC_CONFIG_SRCDIR([src/app/main/tor_main.c])
 AC_CONFIG_MACRO_DIR([m4])
 
@@ -18,7 +18,7 @@ AC_DEFINE_UNQUOTED([CONFIG_FLAGS], ["$configure_flags"], [Flags passed to config
 # version number changes.  Tor uses it to make sure that it
 # only shuts down for missing "required protocols" when those protocols
 # are listed as required by a consensus after this date.
-AC_DEFINE(APPROX_RELEASE_DATE, ["2023-09-25"], # for 0.4.8.7-dev
+AC_DEFINE(APPROX_RELEASE_DATE, ["2023-09-25"], # for 0.4.8.8-dev
           [Approximate date when this software was released. (Updated when the version changes.)])
 
 # "foreign" means we don't follow GNU package layout standards
diff --git a/contrib/win32build/tor-mingw.nsi.in b/contrib/win32build/tor-mingw.nsi.in
index 0f544432e3..022e383baf 100644
--- a/contrib/win32build/tor-mingw.nsi.in
+++ b/contrib/win32build/tor-mingw.nsi.in
@@ -8,13 +8,13 @@
 !include "LogicLib.nsh"
 !include "FileFunc.nsh"
 !insertmacro GetParameters
-!define VERSION "0.4.8.7-dev"
+!define VERSION "0.4.8.8-dev"
 !define INSTALLER "tor-${VERSION}-win32.exe"
 !define WEBSITE "https://www.torproject.org/"
 !define LICENSE "LICENSE"
 !define BIN "..\bin" ;BIN is where it expects to find tor.exe, tor-resolve.exe
-  
- 
+
+
 SetCompressor /SOLID LZMA ;Tighter compression
 RequestExecutionLevel user ;Updated for Vista compatibility
 OutFile ${INSTALLER}
@@ -29,7 +29,7 @@ VIProductVersion "${VERSION}"
 VIAddVersionKey "ProductName" "The Onion Router: Tor"
 VIAddVersionKey "Comments" "${WEBSITE}"
 VIAddVersionKey "LegalTrademarks" "Three line BSD"
-VIAddVersionKey "LegalCopyright" "©2004-2008, Roger Dingledine, Nick Mathewson. ©2009 The Tor Project, Inc. "
+VIAddVersionKey "LegalCopyright" "©2004-2008, Roger Dingledine, Nick Mathewson. ©2009 The Tor Project, Inc. "
 VIAddVersionKey "FileDescription" "Tor is an implementation of Onion Routing. You can read more at ${WEBSITE}"
 VIAddVersionKey "FileVersion" "${VERSION}"
 
@@ -121,7 +121,7 @@ SectionEnd
 
 Section "Desktop" Desktop
    SetOutPath $INSTDIR
-   CreateShortCut "$DESKTOP\Tor.lnk" "$INSTDIR\tor.exe" "" "$INSTDIR\tor.ico" 
+   CreateShortCut "$DESKTOP\Tor.lnk" "$INSTDIR\tor.exe" "" "$INSTDIR\tor.ico"
 SectionEnd
 
 Section /o "Run at startup" Startup