diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 2068ea6..98d11c1 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -37,3 +37,10 @@ repos:
         language: system
         require_serial: true
         types: [python]
+
+      - id: pyflakes
+        name: pyflakes
+        entry: pyflakes
+        language: system
+        require_serial: true
+        types: [python]
diff --git a/poetry.lock b/poetry.lock
index 06fa17d..86f6d86 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -1707,4 +1707,4 @@ docs = []
 [metadata]
 lock-version = "2.0"
 python-versions = "^3.8.0"
-content-hash = "e0623333a7a6038f4ee596a1ffafd2b863f3002853ea1325ac5ae0e28d754a65"
+content-hash = "ffe98db0b0f20a32849f6fd5afa04757c8b3f5fe62944368f51c2418dd4c8ea3"
diff --git a/pyproject.toml b/pyproject.toml
index a4a18dd..99da5da 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -72,6 +72,8 @@ isort = "^5.11.5"
 black = "^23.9.1"
 flynt = "^1.0"
 deptry = "^0.12.0"
+flake8 = "^5.0.4"
+pyflakes = "^2.5.0"
 
 [tool.poetry.scripts]
 openapi-spec-validator = "openapi_spec_validator.__main__:main"