diff --git a/gramps/gen/config.py b/gramps/gen/config.py
index a2b8472b1..ecef0f55a 100644
--- a/gramps/gen/config.py
+++ b/gramps/gen/config.py
@@ -155,7 +155,7 @@ register('behavior.translator-needed', True)
 register('behavior.use-tips', False)
 register('behavior.welcome', 100)
 register('behavior.web-search-url', 'http://google.com/#&q=%(text)s')
-register('behavior.addons-url', "https://raw.githubusercontent.com/gramps-project/addons/master/gramps50")
+register('behavior.addons-url', "https://raw.githubusercontent.com/gramps-project/addons/master/gramps51")
 
 register('database.backend', 'bsddb')
 register('database.compress-backup', True)
diff --git a/gramps/plugins/docgen/docgen.gpr.py b/gramps/plugins/docgen/docgen.gpr.py
index b786c2d27..5dc01e4a1 100644
--- a/gramps/plugins/docgen/docgen.gpr.py
+++ b/gramps/plugins/docgen/docgen.gpr.py
@@ -21,7 +21,7 @@ from gramps.gen.plug._pluginreg import newplugin, STABLE
 from gramps.gen.const import GRAMPS_LOCALE as glocale
 _ = glocale.translation.gettext
 
-MODULE_VERSION="5.0"
+MODULE_VERSION="5.1"
 
 #------------------------------------------------------------------------
 #
diff --git a/gramps/plugins/drawreport/drawplugins.gpr.py b/gramps/plugins/drawreport/drawplugins.gpr.py
index 9aedbf58b..1eee9be81 100644
--- a/gramps/plugins/drawreport/drawplugins.gpr.py
+++ b/gramps/plugins/drawreport/drawplugins.gpr.py
@@ -22,7 +22,7 @@ from gramps.gen.plug._pluginreg import *
 from gramps.gen.const import GRAMPS_LOCALE as glocale
 _ = glocale.translation.gettext
 
-MODULE_VERSION="5.0"
+MODULE_VERSION="5.1"
 
 # this is the default in gen/plug/_pluginreg.py: plg.require_active = True
 
diff --git a/gramps/plugins/export/export.gpr.py b/gramps/plugins/export/export.gpr.py
index ac8c70bee..fc005ef71 100644
--- a/gramps/plugins/export/export.gpr.py
+++ b/gramps/plugins/export/export.gpr.py
@@ -21,7 +21,7 @@ from gramps.gen.plug._pluginreg import newplugin, STABLE, EXPORT
 from gramps.gen.const import GRAMPS_LOCALE as glocale
 _ = glocale.translation.gettext
 
-MODULE_VERSION="5.0"
+MODULE_VERSION="5.1"
 
 #------------------------------------------------------------------------
 #
diff --git a/gramps/plugins/gramplet/gramplet.gpr.py b/gramps/plugins/gramplet/gramplet.gpr.py
index 9d9638dc9..cdf13298f 100644
--- a/gramps/plugins/gramplet/gramplet.gpr.py
+++ b/gramps/plugins/gramplet/gramplet.gpr.py
@@ -24,7 +24,7 @@ from gramps.gen.plug._pluginreg import register, STABLE, UNSTABLE, GRAMPLET
 from gramps.gen.const import GRAMPS_LOCALE as glocale
 _ = glocale.translation.gettext
 
-MODULE_VERSION="5.0"
+MODULE_VERSION="5.1"
 
 #------------------------------------------------------------------------
 #
diff --git a/gramps/plugins/graph/graphplugins.gpr.py b/gramps/plugins/graph/graphplugins.gpr.py
index 9857d3450..e28c2319f 100644
--- a/gramps/plugins/graph/graphplugins.gpr.py
+++ b/gramps/plugins/graph/graphplugins.gpr.py
@@ -21,7 +21,7 @@ from gramps.gen.plug._pluginreg import *
 from gramps.gen.const import GRAMPS_LOCALE as glocale
 _ = glocale.translation.gettext
 
-MODULE_VERSION="5.0"
+MODULE_VERSION="5.1"
 
 # this is the default in gen/plug/_pluginreg.py: plg.require_active = True
 
diff --git a/gramps/plugins/importer/import.gpr.py b/gramps/plugins/importer/import.gpr.py
index 902daa441..712ef0c6f 100644
--- a/gramps/plugins/importer/import.gpr.py
+++ b/gramps/plugins/importer/import.gpr.py
@@ -21,7 +21,7 @@ from gramps.gen.plug._pluginreg import newplugin, STABLE, IMPORT
 from gramps.gen.const import GRAMPS_LOCALE as glocale
 _ = glocale.translation.gettext
 
-MODULE_VERSION="5.0"
+MODULE_VERSION="5.1"
 
 #------------------------------------------------------------------------
 #
diff --git a/gramps/plugins/lib/libplugins.gpr.py b/gramps/plugins/lib/libplugins.gpr.py
index 2f8ef9814..66f8a545f 100644
--- a/gramps/plugins/lib/libplugins.gpr.py
+++ b/gramps/plugins/lib/libplugins.gpr.py
@@ -22,7 +22,7 @@ from gramps.gen.plug._pluginreg import register, STABLE, GENERAL
 from gramps.gen.const import GRAMPS_LOCALE as glocale
 _ = glocale.translation.gettext
 
-MODULE_VERSION="5.0"
+MODULE_VERSION="5.1"
 
 #------------------------------------------------------------------------
 #
diff --git a/gramps/plugins/mapservices/mapservice.gpr.py b/gramps/plugins/mapservices/mapservice.gpr.py
index 2e613928c..c9add64fc 100644
--- a/gramps/plugins/mapservices/mapservice.gpr.py
+++ b/gramps/plugins/mapservices/mapservice.gpr.py
@@ -20,7 +20,7 @@
 from gramps.gen.const import GRAMPS_LOCALE as glocale
 _ = glocale.translation.gettext
 
-MODULE_VERSION="5.0"
+MODULE_VERSION="5.1"
 
 #------------------------------------------------------------------------
 #
diff --git a/gramps/plugins/quickview/quickview.gpr.py b/gramps/plugins/quickview/quickview.gpr.py
index 86567dcb4..ca1865f1d 100644
--- a/gramps/plugins/quickview/quickview.gpr.py
+++ b/gramps/plugins/quickview/quickview.gpr.py
@@ -22,7 +22,7 @@ from gramps.gen.plug._pluginreg import *
 from gramps.gen.const import GRAMPS_LOCALE as glocale
 _ = glocale.translation.gettext
 
-MODULE_VERSION="5.0"
+MODULE_VERSION="5.1"
 
 #------------------------------------------------------------------------
 #
diff --git a/gramps/plugins/rel/relplugins.gpr.py b/gramps/plugins/rel/relplugins.gpr.py
index ab3cd58c0..1c3399e71 100644
--- a/gramps/plugins/rel/relplugins.gpr.py
+++ b/gramps/plugins/rel/relplugins.gpr.py
@@ -22,7 +22,7 @@ from gramps.gen.plug._pluginreg import newplugin, STABLE, RELCALC
 from gramps.gen.const import GRAMPS_LOCALE as glocale
 _ = glocale.translation.gettext
 
-MODULE_VERSION="5.0"
+MODULE_VERSION="5.1"
 
 #
 # Relationship calculators
diff --git a/gramps/plugins/sidebar/sidebar.gpr.py b/gramps/plugins/sidebar/sidebar.gpr.py
index c25007cac..d7ec9ed73 100644
--- a/gramps/plugins/sidebar/sidebar.gpr.py
+++ b/gramps/plugins/sidebar/sidebar.gpr.py
@@ -20,7 +20,7 @@
 from gramps.gen.const import GRAMPS_LOCALE as glocale
 _ = glocale.translation.gettext
 
-MODULE_VERSION="5.0"
+MODULE_VERSION="5.1"
 
 #------------------------------------------------------------------------
 #
diff --git a/gramps/plugins/textreport/textplugins.gpr.py b/gramps/plugins/textreport/textplugins.gpr.py
index bd9af5804..ab0cdcddc 100644
--- a/gramps/plugins/textreport/textplugins.gpr.py
+++ b/gramps/plugins/textreport/textplugins.gpr.py
@@ -22,7 +22,7 @@ from gramps.gen.plug._pluginreg import *
 from gramps.gen.const import GRAMPS_LOCALE as glocale
 _ = glocale.translation.gettext
 
-MODULE_VERSION="5.0"
+MODULE_VERSION="5.1"
 
 # this is the default in gen/plug/_pluginreg.py: plg.require_active = True
 
diff --git a/gramps/plugins/tool/tools.gpr.py b/gramps/plugins/tool/tools.gpr.py
index 5e570d0d3..14dd740d9 100644
--- a/gramps/plugins/tool/tools.gpr.py
+++ b/gramps/plugins/tool/tools.gpr.py
@@ -25,7 +25,7 @@ _ = glocale.translation.gettext
 GRAMPS registration file
 """
 
-MODULE_VERSION="5.0"
+MODULE_VERSION="5.1"
 
 #------------------------------------------------------------------------
 #
diff --git a/gramps/plugins/tool/toolsdebug.gpr.py b/gramps/plugins/tool/toolsdebug.gpr.py
index 94caf88ff..072d58749 100644
--- a/gramps/plugins/tool/toolsdebug.gpr.py
+++ b/gramps/plugins/tool/toolsdebug.gpr.py
@@ -25,7 +25,7 @@ _ = glocale.translation.gettext
 GRAMPS registration file
 """
 
-MODULE_VERSION="5.0"
+MODULE_VERSION="5.1"
 
 #------------------------------------------------------------------------
 #
diff --git a/gramps/plugins/view/view.gpr.py b/gramps/plugins/view/view.gpr.py
index 9b6666c90..1a4f88c89 100644
--- a/gramps/plugins/view/view.gpr.py
+++ b/gramps/plugins/view/view.gpr.py
@@ -24,7 +24,7 @@
 from gramps.gen.const import GRAMPS_LOCALE as glocale
 _ = glocale.translation.gettext
 
-MODULE_VERSION="5.0"
+MODULE_VERSION="5.1"
 
 #------------------------------------------------------------------------
 #
diff --git a/gramps/plugins/webreport/webplugins.gpr.py b/gramps/plugins/webreport/webplugins.gpr.py
index 135dfb831..5ba77cd00 100644
--- a/gramps/plugins/webreport/webplugins.gpr.py
+++ b/gramps/plugins/webreport/webplugins.gpr.py
@@ -21,7 +21,7 @@ from gramps.gen.plug._pluginreg import *
 from gramps.gen.const import GRAMPS_LOCALE as glocale
 _ = glocale.translation.gettext
 
-MODULE_VERSION="5.0"
+MODULE_VERSION="5.1"
 
 #------------------------------------------------------------------------
 #
diff --git a/gramps/plugins/webstuff/webstuff.gpr.py b/gramps/plugins/webstuff/webstuff.gpr.py
index db5a74194..beb5f575d 100644
--- a/gramps/plugins/webstuff/webstuff.gpr.py
+++ b/gramps/plugins/webstuff/webstuff.gpr.py
@@ -23,7 +23,7 @@ _ = glocale.translation.gettext
 
 # plugins/webstuff/webstuff.gpr.py
 
-MODULE_VERSION="5.0"
+MODULE_VERSION="5.1"
 
 #------------------------------------------------------------------------
 #
diff --git a/gramps/version.py b/gramps/version.py
index 0d333d140..093e779c4 100644
--- a/gramps/version.py
+++ b/gramps/version.py
@@ -18,7 +18,7 @@
 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 #
 
-VERSION_TUPLE = (5, 0, 0)
-VERSION_QUALIFIER = "-alpha1"
+VERSION_TUPLE = (5, 1, 0)
+VERSION_QUALIFIER = ""
 VERSION        = '.'.join(map(str,VERSION_TUPLE)) + VERSION_QUALIFIER
 major_version = "%s.%s" % (VERSION_TUPLE[0], VERSION_TUPLE[1])
diff --git a/setup.py b/setup.py
index 78b81f03e..ba6783ddb 100755
--- a/setup.py
+++ b/setup.py
@@ -488,7 +488,7 @@ setup(name = 'gramps',
       data_files = data_files,
       scripts = ['scripts/gramps'],
       classifiers = [
-          "Development Status :: 3 - Alpha",
+          "Development Status :: 1 - Planning",
           "Environment :: Console",
           "Environment :: MacOS X",
           "Environment :: Plugins",