diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 04a564380..a2087eacd 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -28,7 +28,7 @@ jobs:
     name: Packaging
     strategy:
       matrix:
-        python-version: ["3.9", "3.10", "3.11"]
+        python-version: ["3.11"]
     steps:
       - uses: actions/checkout@v4
       - name: Set up Python ${{ matrix.python-version }}
diff --git a/.github/workflows/python-version.txt b/.github/workflows/python-version.txt
index c8cfe3959..2c0733315 100644
--- a/.github/workflows/python-version.txt
+++ b/.github/workflows/python-version.txt
@@ -1 +1 @@
-3.10
+3.11
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 094ed0183..72decba18 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -26,17 +26,8 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [3.9, '3.10', 3.11]
+        python-version: [3.11]
         database: [sqlite, postgres, mysql]
-        exclude:
-          - database: mysql
-            python-version: 3.9
-          - database: mysql
-            python-version: 3.11
-          - database: sqlite
-            python-version: 3.9
-          - database: sqlite
-            python-version: 3.11
     steps:
       - uses: actions/checkout@v4
       - uses: getong/mariadb-action@v1.1
@@ -101,7 +92,7 @@ jobs:
           python -m coverage report --skip-covered --skip-empty --show-missing --format=markdown >> $GITHUB_STEP_SUMMARY
 
           python -m coverage report
-        if: matrix.database == 'postgres' && matrix.python-version == '3.10'
+        if: matrix.database == 'postgres' && matrix.python-version == '3.11'
 
       - name: "Make badge"
         uses: schneegans/dynamic-badges-action@v1.7.0
diff --git a/Dockerfile b/Dockerfile
index 451d2b76c..7f3f363e1 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM python:3.10-bookworm
+FROM python:3.11-bookworm
 
 RUN apt-get update && \
     apt-get install -y git gettext libmariadb-dev libpq-dev locales libmemcached-dev build-essential \
@@ -20,7 +20,6 @@ RUN apt-get update && \
 
 ENV LC_ALL=C.UTF-8
 
-
 COPY pyproject.toml /pretalx
 COPY src /pretalx/src
 COPY deployment/docker/pretalx.bash /usr/local/bin/pretalx
diff --git a/doc/administrator/installation.rst b/doc/administrator/installation.rst
index c8b6ded8b..1466cd8fb 100644
--- a/doc/administrator/installation.rst
+++ b/doc/administrator/installation.rst
@@ -24,7 +24,7 @@ Step 0: Prerequisites
 Please set up the following systems beforehand. We can’t go into their use
 and configuration here, but please have a look at the linked pages.
 
-* **Python 3.9 or newer**
+* **Python 3.11 or newer**
 * An SMTP server to send out mails
 * An HTTP reverse proxy like `nginx`_ to allow HTTPS connections
 * A database server: `MySQL`_ 8+, MariaDB 10.4+ or `PostgreSQL`_ 12+, or SQLite
diff --git a/pyproject.toml b/pyproject.toml
index 89382f076..1ed3a642b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -3,7 +3,7 @@ name = "pretalx"
 dynamic = ["version"]
 description = "Conference organisation: CfPs, scheduling, much more"
 readme = "README.rst"
-requires-python = ">=3.9"
+requires-python = ">=3.11"
 keywords = ["conference", "event", "schedule", "talk", "cfp"]
 authors = [
   {name = "Tobias Kunze", email = "r@rixx.de"},
@@ -19,10 +19,7 @@ classifiers = [
   "Intended Audience :: Other Audience",
   "License :: OSI Approved :: Apache Software License",
   "License :: OSI Approved",
-  "Programming Language :: Python :: 3",
-  "Programming Language :: Python :: 3.10",
   "Programming Language :: Python :: 3.11",
-  "Programming Language :: Python :: 3.9",
   "Topic :: Internet :: WWW/HTTP :: Dynamic Content",
 ]