diff --git a/project.cfg b/project.cfg
index 33bed109a..ebe01b4b5 100644
--- a/project.cfg
+++ b/project.cfg
@@ -2,7 +2,7 @@
 name = Rx
 project = RxPY
 # Please make sure the version here remains the same as in rx/__init__.py
-version = 3.1.0
+version = 3.1.1
 description = Reactive Extensions (Rx) for Python
 author = Dag Brattli
 author_email = dag@brattli.net
diff --git a/rx/__init__.py b/rx/__init__.py
index 535b152b1..b995f2b2a 100644
--- a/rx/__init__.py
+++ b/rx/__init__.py
@@ -8,7 +8,7 @@
 
 
 # Please make sure the version here remains the same as in project.cfg
-__version__ = '3.1.0'
+__version__ = '3.1.1'
 
 
 def amb(*sources: Observable) -> Observable: