diff --git a/ci/appveyor/sakia.iss b/ci/appveyor/sakia.iss
index 0483aaf52f0595b761d21be70374693ec8f09ef9..0b3af71fdb17dfcdab0d3a07a19fda8c1d5c82f6 100644
--- a/ci/appveyor/sakia.iss
+++ b/ci/appveyor/sakia.iss
@@ -15,7 +15,7 @@
 #error "Unable to find MyAppExe"
 #endif
 
-#define MyAppVerStr "0.20.0dev10"
+#define MyAppVerStr "0.20.0dev12"
 
 [Setup]
 AppName={#MyAppName}
diff --git a/ci/travis/debian/DEBIAN/control b/ci/travis/debian/DEBIAN/control
index f3d5fa3ca94b3900eae3523f7e3ef0bec1205bdc..5993319218e7ba4f2f610049ae4d12857e5869af 100644
--- a/ci/travis/debian/DEBIAN/control
+++ b/ci/travis/debian/DEBIAN/control
@@ -1,5 +1,5 @@
 Package: sakia
-Version: 0.20.0dev10
+Version: 0.20.0dev12
 Section: misc
 Priority: optional
 Architecture: all
diff --git a/src/sakia/__init__.py b/src/sakia/__init__.py
index af4f77446e3f9336f2beff94c3e3637a4b3b1067..97de97e7456c51fa643688a58057f012b8083426 100644
--- a/src/sakia/__init__.py
+++ b/src/sakia/__init__.py
@@ -1,2 +1,2 @@
-__version_info__ = ('0', '20', '0dev11')
+__version_info__ = ('0', '20', '0dev12')
 __version__ = '.'.join(__version_info__)