diff --git a/HISTORY.rst b/HISTORY.rst
index 896ae6f..876c60b 100644
--- a/HISTORY.rst
+++ b/HISTORY.rst
@@ -3,6 +3,13 @@
 History
 -------
 
+2.5.2 (2024-01-09)
+++++++++++++++++++
+
+* The vendored ``libmaxminddb`` version was updated to 1.9.0. This fixes
+  an issue when reading databases with a search tree exceeding 2 GB.
+  Reported by Sami Salonen. GitHub #146.
+
 2.5.1 (2023-11-09)
 ++++++++++++++++++
 
diff --git a/dev-bin/release.sh b/dev-bin/release.sh
index 47a9c52..1dae9a2 100755
--- a/dev-bin/release.sh
+++ b/dev-bin/release.sh
@@ -2,8 +2,6 @@
 
 set -eu -o pipefail
 
-pip install twine sphinx
-
 changelog=$(cat HISTORY.rst)
 
 regex='
diff --git a/extension/libmaxminddb b/extension/libmaxminddb
index 93a7e0e..c796899 160000
--- a/extension/libmaxminddb
+++ b/extension/libmaxminddb
@@ -1 +1 @@
-Subproject commit 93a7e0e5627686deb82aa636376f53b1c7af3d9a
+Subproject commit c796899e8faae25d561904cf44f1d4d3118a55e5
diff --git a/maxminddb/__init__.py b/maxminddb/__init__.py
index cad8824..62ffa62 100644
--- a/maxminddb/__init__.py
+++ b/maxminddb/__init__.py
@@ -81,7 +81,7 @@ def open_database(
 
 
 __title__ = "maxminddb"
-__version__ = "2.5.1"
+__version__ = "2.5.2"
 __author__ = "Gregory Oschwald"
 __license__ = "Apache License, Version 2.0"
 __copyright__ = "Copyright 2013-2023 MaxMind, Inc."
diff --git a/pyproject.toml b/pyproject.toml
index 0b40f93..a97cdc5 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "maxminddb"
-version = "2.5.1"
+version = "2.5.2"
 description = "Reader for the MaxMind DB format"
 authors = [
     {name = "Gregory Oschwald", email = "goschwald@maxmind.com"},