diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 545b8f8..e6cdfeb 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,7 +1,7 @@
 # See https://pre-commit.com for more information
 repos:
 - repo: https://github.com/pre-commit/pre-commit-hooks
-  rev: v4.1.0  # Python 3.6 compatible
+  rev: v6.0.0  # Python 3.9 compatible
   hooks:
   # Python related checks
   - id: check-ast
@@ -22,6 +22,7 @@ repos:
   - id: mixed-line-ending
     name: Force line endings to LF
     args: ['--fix=lf']
+  - id: requirements-txt-fixer
   - id: trailing-whitespace
 
 - repo: https://github.com/pre-commit/pygrep-hooks
@@ -31,8 +32,9 @@ repos:
   - id: python-no-eval
   - id: python-no-log-warn
   - id: python-use-type-annotations
+  - id: text-unicode-replacement-char
 
 # Pre-commit CI config, see https://pre-commit.ci/
 ci:
   autofix_prs: false
-  autoupdate_schedule: quarterly
+  autoupdate_schedule: monthly
diff --git a/requirements.txt b/requirements.txt
index 0b082d9..c9b591e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 # Pin packages to work with Python 3.9.
 Django==4.2.30
 djangorestframework==3.16.1
-pytz==2026.3.post1
-PyMySQL==1.2.0
-pandas==2.3.3
 numpy==2.0.2  # pandas dependency
+pandas==2.3.3
+PyMySQL==1.2.0
+pytz==2026.3.post1