diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 61130ae..dfce104 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -29,8 +29,8 @@ repos:
   hooks:
   - id: black
     args: [--safe, --quiet, --line-length=100]
-- repo: https://github.com/humitos/mirrors-autoflake.git
-  rev: v1.1
+- repo: https://github.com/PyCQA/autoflake
+  rev: v2.2.1
   hooks:
   - id: autoflake
     args: [--in-place, --remove-unused-variable]
diff --git a/.readthedocs.yml b/.readthedocs.yml
index 90a2357..64f44dd 100644
--- a/.readthedocs.yml
+++ b/.readthedocs.yml
@@ -1,11 +1,12 @@
-# .readthedocs.yml
-# Read the Docs configuration file
-# See https://docs.readthedocs.io/en/stable/config-file/v2.html for details
+version: 2
 
 sphinx:
   configuration: docs/conf.py
 
-version: 2
+build:
+  os: ubuntu-22.04
+  tools:
+    python: mambaforge-22.9
 
 conda:
   environment: environment.yaml
@@ -14,4 +15,3 @@ python:
   install:
   - method: pip
     path: .
-  system_packages: true