diff --git a/pkgs/by-name/pr/pretix/fakeredis-0.25-compat.patch b/pkgs/by-name/pr/pretix/fakeredis-0.25-compat.patch
new file mode 100644
index 000000000000..842ee4f7cac0
--- /dev/null
+++ b/pkgs/by-name/pr/pretix/fakeredis-0.25-compat.patch
@@ -0,0 +1,10 @@
+diff --git a/src/pretix/testutils/mock.py b/src/pretix/testutils/mock.py
+index 66ee3fb52..9d9ba02bd 100644
+--- a/src/pretix/testutils/mock.py
++++ b/src/pretix/testutils/mock.py
+@@ -38,4 +38,4 @@ def mocker_context():
+ 
+ 
+ def get_redis_connection(alias="default", write=True):
+-    return fakeredis.FakeStrictRedis(server=fakeredis.FakeServer.get_server("127.0.0.1:None:v(7, 0)", (7, 0)))
++    return fakeredis.FakeStrictRedis(server=fakeredis.FakeServer.get_server("127.0.0.1:None:v(7, 0)", (7, 0), server_type="redis"))
diff --git a/pkgs/by-name/pr/pretix/package.nix b/pkgs/by-name/pr/pretix/package.nix
index ec6a4fc70f18..9215ef90a197 100644
--- a/pkgs/by-name/pr/pretix/package.nix
+++ b/pkgs/by-name/pr/pretix/package.nix
@@ -87,6 +87,9 @@ python.pkgs.buildPythonApplication rec {
     # Discover pretix.plugin entrypoints during build and add them into
     # INSTALLED_APPS, so that their static files are collected.
     ./plugin-build.patch
+
+    # TypeError: FakeServer.get_server() missing 1 required positional argument: 'server_type'
+    ./fakeredis-0.25-compat.patch
   ];
 
   pythonRelaxDeps = [
@@ -98,6 +101,7 @@ python.pkgs.buildPythonApplication rec {
     "protobuf"
     "pyjwt"
     "python-bidi"
+    "redis"
     "requests"
     "sentry-sdk"
   ];