diff --git a/.appveyor.yml b/.appveyor.yml
index 4753e6a3..719c8926 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -1,4 +1,4 @@
-version: 8.10.{build}
+version: 9.0.{build}
 
 configuration:
   - Release
diff --git a/gpxsee.pro b/gpxsee.pro
index 498efb21..00f3cbf1 100644
--- a/gpxsee.pro
+++ b/gpxsee.pro
@@ -3,7 +3,7 @@ unix:!macx {
 } else {
     TARGET = GPXSee
 }
-VERSION = 8.10
+VERSION = 9.0
 
 QT += core \
     gui \
diff --git a/pkg/gpxsee.nsi b/pkg/gpxsee.nsi
index 27be025b..9e81eb7d 100644
--- a/pkg/gpxsee.nsi
+++ b/pkg/gpxsee.nsi
@@ -9,7 +9,7 @@ Unicode true
 ; The name of the installer
 Name "GPXSee"
 ; Program version
-!define VERSION "8.10"
+!define VERSION "9.0"
 
 ; The file to write
 OutFile "GPXSee-${VERSION}.exe"
diff --git a/pkg/gpxsee64.nsi b/pkg/gpxsee64.nsi
index ca13b246..9cdab2eb 100644
--- a/pkg/gpxsee64.nsi
+++ b/pkg/gpxsee64.nsi
@@ -9,7 +9,7 @@ Unicode true
 ; The name of the installer
 Name "GPXSee"
 ; Program version
-!define VERSION "8.10"
+!define VERSION "9.0"
 
 ; The file to write
 OutFile "GPXSee-${VERSION}_x64.exe"