diff --git a/docs/conf.py b/docs/conf.py
index da9dd19..fec6bfb 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -63,7 +63,7 @@
 # The short X.Y version.
 version = '2.4'
 # The full version, including alpha/beta/rc tags.
-release = '2.4.0'
+release = '2.4.dev1'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
diff --git a/include/pybind11/detail/common.h b/include/pybind11/detail/common.h
index d1c6c2b..678a58c 100644
--- a/include/pybind11/detail/common.h
+++ b/include/pybind11/detail/common.h
@@ -94,7 +94,7 @@
 
 #define PYBIND11_VERSION_MAJOR 2
 #define PYBIND11_VERSION_MINOR 4
-#define PYBIND11_VERSION_PATCH 0
+#define PYBIND11_VERSION_PATCH dev1
 
 /// Include Python header, disable linking to pythonX_d.lib on Windows in debug mode
 #if defined(_MSC_VER)
diff --git a/pybind11/_version.py b/pybind11/_version.py
index fdd1ea3..e11cfe3 100644
--- a/pybind11/_version.py
+++ b/pybind11/_version.py
@@ -1,2 +1,2 @@
-version_info = (2, 4, 0)
+version_info = (2, 4, 'dev1')
 __version__ = '.'.join(map(str, version_info))