diff --git a/doc/changelog.rst b/doc/changelog.rst
index f08fb893d..97504c803 100644
--- a/doc/changelog.rst
+++ b/doc/changelog.rst
@@ -1,8 +1,8 @@
 Changelog
 =========
 
-Changes in Version 3.9.0b1
---------------------------
+Changes in Version 3.9.0b2.dev0
+-------------------------------
 
 Version 3.9 adds support for MongoDB 4.2. Highlights include:
 
diff --git a/pymongo/__init__.py b/pymongo/__init__.py
index 34dcbb0dd..5e2bf2067 100644
--- a/pymongo/__init__.py
+++ b/pymongo/__init__.py
@@ -64,7 +64,7 @@ SLOW_ONLY = 1
 ALL = 2
 """Profile all operations."""
 
-version_tuple = (3, 9, 0, 'b1')
+version_tuple = (3, 9, 0, 'b2.dev0')
 
 def get_version_string():
     if isinstance(version_tuple[-1], str):
diff --git a/setup.py b/setup.py
index 707422c05..f3d45340d 100755
--- a/setup.py
+++ b/setup.py
@@ -39,7 +39,7 @@ except ImportError:
     except ImportError:
         _HAVE_SPHINX = False
 
-version = "3.9.0b1"
+version = "3.9.0b2.dev0"
 
 f = open("README.rst")
 try: