diff --git a/.python-version b/.python-version
index bd28b9c..2c07333 100644
--- a/.python-version
+++ b/.python-version
@@ -1 +1 @@
-3.9
+3.11
diff --git a/pyproject.toml b/pyproject.toml
index c7db2c0..29e6b89 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -3,7 +3,7 @@ name = "mediawiki-dump-tools"
 version = "0.1.1"
 description = "Add your description here"
 readme = "README.md"
-requires-python = ">=3.9"
+requires-python = ">=3.11"
 dependencies = [
     "deltas>=0.7.0",
     "more-itertools>=10.7.0",