diff --git a/.bumpversion.cfg b/.bumpversion.cfg
index 977ee6db..3751f1ac 100644
--- a/.bumpversion.cfg
+++ b/.bumpversion.cfg
@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 3.9.0
+current_version = 3.10.0
 commit = True
 tag = False
 
diff --git a/doc/conf.py b/doc/conf.py
index f2d7cd64..7e37ac2a 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -57,7 +57,7 @@
 # built documents.
 #
 # The short X.Y version.
-version = '3.9.0'
+version = '3.10.0'
 # The full version, including alpha/beta/rc tags.
 release = version #+ '.1'
 
diff --git a/flit/__init__.py b/flit/__init__.py
index 68768d29..e9dbb256 100644
--- a/flit/__init__.py
+++ b/flit/__init__.py
@@ -12,7 +12,7 @@
 from .config import ConfigError
 from .log import enable_colourful_output
 
-__version__ = '3.9.0'
+__version__ = '3.10.0'
 
 log = logging.getLogger(__name__)
 
diff --git a/flit_core/flit_core/__init__.py b/flit_core/flit_core/__init__.py
index e50d347d..71ccaae3 100644
--- a/flit_core/flit_core/__init__.py
+++ b/flit_core/flit_core/__init__.py
@@ -4,4 +4,4 @@
 All the convenient development features live in the main 'flit' package.
 """
 
-__version__ = '3.9.0'
+__version__ = '3.10.0'
diff --git a/pyproject.toml b/pyproject.toml
index 1613ae87..537d00be 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,5 +1,5 @@
 [build-system]
-requires = ["flit_core >=3.9.0,<4"]
+requires = ["flit_core >=3.10.0,<4"]
 build-backend = "flit_core.buildapi"
 
 [project]
@@ -8,7 +8,7 @@ authors = [
     {name = "Thomas Kluyver", email = "thomas@kluyver.me.uk"},
 ]
 dependencies = [
-    "flit_core >=3.9.0",
+    "flit_core >=3.10.0",
     "requests",
     "docutils",
     "tomli-w",