diff --git a/components/lazutils/lazversion.pas b/components/lazutils/lazversion.pas
index f5db1fc323..2ff0cb45a4 100644
--- a/components/lazutils/lazversion.pas
+++ b/components/lazutils/lazversion.pas
@@ -24,11 +24,11 @@ type
 
 const
   laz_major = 3;
-  laz_minor = 0;
+  laz_minor = 1;
   laz_release = 0;
-  laz_patch = 3;
+  laz_patch = 0;
   laz_fullversion = ((laz_major *  100 + laz_minor) * 100 + laz_release) * 100 + laz_patch;
-  laz_version = '3.0.0.3';
+  laz_version = '3.1.0.0';
 
 var
   OnLCLWidgetTypeName: TLCLWidgetTypeNameEvent;  // Set by LCL
diff --git a/ide/lazarus.lpi b/ide/lazarus.lpi
index 6976725882..5e849307bf 100644
--- a/ide/lazarus.lpi
+++ b/ide/lazarus.lpi
@@ -23,7 +23,7 @@
     <VersionInfo>
       <UseVersionInfo Value="True"/>
       <MajorVersionNr Value="3"/>
-      <BuildNr Value="3"/>
+      <MinorVersionNr Value="1"/>
       <CharSet Value="04B0"/>
       <StringTable ProductName="Lazarus IDE"/>
     </VersionInfo>
diff --git a/ide/lazarus.res b/ide/lazarus.res
index d48cf7c038..6581cd2cba 100644
Binary files a/ide/lazarus.res and b/ide/lazarus.res differ
diff --git a/ide/packages/ideconfig/version.inc b/ide/packages/ideconfig/version.inc
index e70509cc3c..676d8d1c7b 100644
--- a/ide/packages/ideconfig/version.inc
+++ b/ide/packages/ideconfig/version.inc
@@ -1 +1 @@
-'3.0'
+'3.1'
diff --git a/lazarus.app/Contents/Info.plist b/lazarus.app/Contents/Info.plist
index c326187b79..e528f71ea1 100644
--- a/lazarus.app/Contents/Info.plist
+++ b/lazarus.app/Contents/Info.plist
@@ -148,11 +148,11 @@
 	<key>CFBundlePackageType</key>
 	<string>APPL</string>
 	<key>CFBundleShortVersionString</key>
-	<string>3.0.0</string>
+	<string>3.1.0</string>
 	<key>CFBundleSignature</key>
 	<string>laza</string>
 	<key>CFBundleVersion</key>
-	<string>3</string>
+	<string>0</string>
 	<key>CSResourcesFileMapped</key>
 	<true/>
 	<key>NSHighResolutionCapable</key>
diff --git a/lcl/interfaces/lcl.lpk b/lcl/interfaces/lcl.lpk
index 0dbdcb7782..cc388cf9d4 100644
--- a/lcl/interfaces/lcl.lpk
+++ b/lcl/interfaces/lcl.lpk
@@ -130,7 +130,7 @@ end;"/>
 "/>
     <License Value="modified LGPL-2
 "/>
-    <Version Major="3" Build="3"/>
+    <Version Major="3" Minor="1"/>
     <Files Count="535">
       <Item1>
         <Filename Value="carbon/agl.pp"/>
diff --git a/lcl/lclbase.lpk b/lcl/lclbase.lpk
index 410ee72f1a..2cede8b11c 100644
--- a/lcl/lclbase.lpk
+++ b/lcl/lclbase.lpk
@@ -26,7 +26,7 @@
 "/>
     <License Value="modified LGPL-2
 "/>
-    <Version Major="3" Build="3"/>
+    <Version Major="3" Minor="1"/>
     <Files Count="288">
       <Item1>
         <Filename Value="checklst.pas"/>
diff --git a/packager/globallinks/lcl-3.0.0.3.lpl b/packager/globallinks/lcl-3.1.lpl
similarity index 100%
rename from packager/globallinks/lcl-3.0.0.3.lpl
rename to packager/globallinks/lcl-3.1.lpl
diff --git a/packager/globallinks/lclbase-3.0.0.3.lpl b/packager/globallinks/lclbase-3.1.lpl
similarity index 100%
rename from packager/globallinks/lclbase-3.0.0.3.lpl
rename to packager/globallinks/lclbase-3.1.lpl
diff --git a/tools/install/linux/environmentoptions.xml b/tools/install/linux/environmentoptions.xml
index d3c0ac7cf4..006c51ee41 100644
--- a/tools/install/linux/environmentoptions.xml
+++ b/tools/install/linux/environmentoptions.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <CONFIG>
   <EnvironmentOptions>
-    <Version Value="110" Lazarus="3.0.0.3"/>
+    <Version Value="110" Lazarus="3.1.0.0"/>
     <LazarusDirectory Value="__LAZARUSDIR__">
       <History Count="1">
         <Item1 Value="/usr/lib/lazarus/"/>
diff --git a/tools/install/macosx/environmentoptions.xml b/tools/install/macosx/environmentoptions.xml
index b40e0e0262..d61337db34 100644
--- a/tools/install/macosx/environmentoptions.xml
+++ b/tools/install/macosx/environmentoptions.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <CONFIG>
   <EnvironmentOptions>
-    <Version Value="110" Lazarus="3.0.0.3"/>
+    <Version Value="110" Lazarus="3.1.0.0"/>
     <LazarusDirectory Value="/Developer/lazarus/">
       <History Count="1">
         <Item1 Value="/Developer/lazarus/"/>
diff --git a/tools/install/win/environmentoptions.xml b/tools/install/win/environmentoptions.xml
index f4f2dfc9f1..a2e7c94a67 100644
--- a/tools/install/win/environmentoptions.xml
+++ b/tools/install/win/environmentoptions.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <CONFIG>
   <EnvironmentOptions>
-    <Version Value="110" Lazarus="3.0.0.3"/>
+    <Version Value="110" Lazarus="3.1.0.0"/>
     <LazarusDirectory Value="%LazDir%">
     </LazarusDirectory>
     <CompilerFilename Value="%FpcBinDir%\fpc.exe">