diff --git a/appveyor.yml b/appveyor.yml
index 87af9d88f..590e0bdef 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,6 +1,6 @@
 # Adopted from https://github.com/pybind/pybind11/blob/master/.appveyor.yml
 
-version: 1.2.0 ({build})
+version: 1.2.1 ({build})
 
 os:
   - Visual Studio 2017
diff --git a/doc/doxygen/Doxyfile b/doc/doxygen/Doxyfile
index 538596d1a..a9ab79a1a 100644
--- a/doc/doxygen/Doxyfile
+++ b/doc/doxygen/Doxyfile
@@ -38,7 +38,7 @@ PROJECT_NAME           = Jet
 # could be handy for archiving the generated documentation or if some version
 # control system is used.
 
-PROJECT_NUMBER         = v1.2.0
+PROJECT_NUMBER         = v1.2.1
 
 # Using the PROJECT_BRIEF tag one can provide an optional one line description
 # for a project that appears at the top of each page and should give viewer a
diff --git a/setup.py b/setup.py
index b6092c3f6..560bd88a6 100644
--- a/setup.py
+++ b/setup.py
@@ -77,7 +77,7 @@ def build_extension(self, ext):
 
 setup(
     name='pyjet',
-    version='1.2.0',
+    version='1.2.1',
     author='Doyub Kim',
     author_email='doyubkim@gmail.com',
     description='Fluid simulation engine for computer graphics applications',