diff --git a/doc/changelog.rst b/doc/changelog.rst
index 5d3729582..a71b81ff2 100644
--- a/doc/changelog.rst
+++ b/doc/changelog.rst
@@ -1,6 +1,17 @@
 Changelog
 =========
 
+Changes in Version 4.0
+----------------------
+
+Issues Resolved
+...............
+
+See the `PyMongo 4.0 release notes in JIRA`_ for the list of resolved issues
+in this release.
+
+.. _PyMongo 4.0 release notes in JIRA: https://jira.mongodb.org/secure/ReleaseNote.jspa?projectId=10004&version=18463
+
 Changes in Version 3.11.1
 -------------------------
 
diff --git a/pymongo/__init__.py b/pymongo/__init__.py
index 399e6ba22..796ef15db 100644
--- a/pymongo/__init__.py
+++ b/pymongo/__init__.py
@@ -74,7 +74,7 @@ SLOW_ONLY = 1
 ALL = 2
 """Profile all operations."""
 
-version_tuple = (3, 11, 1)
+version_tuple = (4, 0, '.dev0')
 
 def get_version_string():
     if isinstance(version_tuple[-1], str):
diff --git a/setup.py b/setup.py
index 3bfcb1507..b92104045 100755
--- a/setup.py
+++ b/setup.py
@@ -39,7 +39,7 @@ except ImportError:
     except ImportError:
         _HAVE_SPHINX = False
 
-version = "3.11.1"
+version = "4.0.dev0"
 
 f = open("README.rst")
 try: