diff --git a/.cargo/mutants.toml b/.cargo/mutants.toml
new file mode 100644
index 0000000..2a2728a
--- /dev/null
+++ b/.cargo/mutants.toml
@@ -0,0 +1,4 @@
+exclude_re = [
+    #"replace \\* with \\+ in ArcShift<T>::early_drop_opt",
+    ".*replace is_superseded_by_tentative -> bool with false.*", #Because it still works, it just goes a little slower with this change
+]