diff --git a/src/globus_sdk/version.py b/src/globus_sdk/version.py
index 683b67842..d7df7002e 100644
--- a/src/globus_sdk/version.py
+++ b/src/globus_sdk/version.py
@@ -1,3 +1,3 @@
 # single source of truth for package version,
 # see https://packaging.python.org/en/latest/single_source_version/
-__version__ = "3.27.0"
+__version__ = "3.27.1b1"