diff --git a/include/pybind11/detail/common.h b/include/pybind11/detail/common.h
index cb3f5cf39f..c26df990d6 100644
--- a/include/pybind11/detail/common.h
+++ b/include/pybind11/detail/common.h
@@ -11,11 +11,11 @@
 
 #define PYBIND11_VERSION_MAJOR 2
 #define PYBIND11_VERSION_MINOR 10
-#define PYBIND11_VERSION_PATCH 3
+#define PYBIND11_VERSION_PATCH 4
 
 // Similar to Python's convention: https://docs.python.org/3/c-api/apiabiversion.html
 // Additional convention: 0xD = dev
-#define PYBIND11_VERSION_HEX 0x020A0300
+#define PYBIND11_VERSION_HEX 0x020A0400
 
 // Define some generic pybind11 helper macros for warning management.
 //
diff --git a/pybind11/_version.py b/pybind11/_version.py
index 63078bbe67..a668258f47 100644
--- a/pybind11/_version.py
+++ b/pybind11/_version.py
@@ -8,5 +8,5 @@ def _to_int(s: str) -> Union[int, str]:
         return s
 
 
-__version__ = "2.10.3"
+__version__ = "2.10.4"
 version_info = tuple(_to_int(s) for s in __version__.split("."))