diff --git a/.bumpversion.cfg b/.bumpversion.cfg
index 5485ee1cb..662b7d8c2 100644
--- a/.bumpversion.cfg
+++ b/.bumpversion.cfg
@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 5.2.0
+current_version = 5.2.2-rc.0
 commit = True
 parse = (?P<major>\d+)\.(?P<minor>\d+)\.(?P<patch>\d+)(?:-(?P<prerel>rc)\.(?P<prerelversion>\d+))?
 serialize = 
diff --git a/cellxgene_schema_cli/cellxgene_schema/__init__.py b/cellxgene_schema_cli/cellxgene_schema/__init__.py
index 6c235c596..8042d1400 100644
--- a/cellxgene_schema_cli/cellxgene_schema/__init__.py
+++ b/cellxgene_schema_cli/cellxgene_schema/__init__.py
@@ -1 +1 @@
-__version__ = "5.2.0"
+__version__ = "5.2.2-rc.0"
diff --git a/cellxgene_schema_cli/setup.py b/cellxgene_schema_cli/setup.py
index 2053acd61..3b5f38761 100644
--- a/cellxgene_schema_cli/setup.py
+++ b/cellxgene_schema_cli/setup.py
@@ -5,7 +5,7 @@
 
 setup(
     name="cellxgene-schema",
-    version="5.2.0",
+    version="5.2.2-rc.0",
     url="https://github.com/chanzuckerberg/single-cell-curation",
     license="MIT",
     author="Chan Zuckerberg Initiative",