diff --git a/.gitignore b/.gitignore
index 425c9f2..aa1222e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -10,7 +10,6 @@ dist/
 MANIFEST
 *.egg-info
 build
-mutants/
 
 pyngrok/bin
 tests/.ngrok
diff --git a/pyproject.toml b/pyproject.toml
index 465bd95..db42098 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -43,7 +43,6 @@ classifiers = [
 dev = [
     "pytest",
     "coverage[toml]",
-    "mutmut",
     "psutil",
     "flake8",
     "flake8-pyproject",