diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 757cfeb..d01bb18 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -8,7 +8,6 @@ repos:
     - id: end-of-file-fixer
     - id: mixed-line-ending
     - id: name-tests-test
-    - id: requirements-txt-fixer
     - id: trailing-whitespace
 - repo: https://github.com/astral-sh/ruff-pre-commit
   # Ruff version.
diff --git a/requirements.txt b/requirements.txt
index 9335923..38018ce 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -25,3 +25,4 @@ toml==0.10.2
 tomli==2.0.2
 typing_extensions==4.12.2
 virtualenv==20.27.0
+six==1.17.0