diff --git a/pyproject.toml b/pyproject.toml
index 9545cb0573320..dea3a39cb0ccc 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -292,7 +292,6 @@ exclude = [
 "asv_bench/*" = ["TID"]
 # TCH to be enabled gradually
 "pandas/core/arrays/*" = ["TCH"]
-"pandas/core/io/*" = ["TCH"]
 "pandas/core/nanops.py" = ["TCH"]
 "pandas/core/apply.py" = ["TCH"]
 "pandas/core/base.py" = ["TCH"]