diff --git a/pyo3-arrow/src/array.rs b/pyo3-arrow/src/array.rs
index 0d16c08..42d385b 100644
--- a/pyo3-arrow/src/array.rs
+++ b/pyo3-arrow/src/array.rs
@@ -250,7 +250,6 @@ impl PyArray {
         to_numpy(py, &self.array)
     }
 
-    #[allow(unused_variables)]
     #[pyo3(signature = (requested_schema=None))]
     fn __arrow_c_array__<'py>(
         &'py self,
diff --git a/pyo3-arrow/src/array_reader.rs b/pyo3-arrow/src/array_reader.rs
index 386a5ee..f4f71e8 100644
--- a/pyo3-arrow/src/array_reader.rs
+++ b/pyo3-arrow/src/array_reader.rs
@@ -118,7 +118,6 @@ impl PyArrayReader {
         to_schema_pycapsule(py, self.field_ref()?.as_ref())
     }
 
-    #[allow(unused_variables)]
     #[pyo3(signature = (requested_schema=None))]
     fn __arrow_c_stream__<'py>(
         &'py mut self,
diff --git a/pyo3-arrow/src/chunked.rs b/pyo3-arrow/src/chunked.rs
index 60d692d..23e6a18 100644
--- a/pyo3-arrow/src/chunked.rs
+++ b/pyo3-arrow/src/chunked.rs
@@ -306,7 +306,6 @@ impl PyChunkedArray {
         to_schema_pycapsule(py, self.field.as_ref())
     }
 
-    #[allow(unused_variables)]
     #[pyo3(signature = (requested_schema=None))]
     fn __arrow_c_stream__<'py>(
         &'py self,
diff --git a/pyo3-arrow/src/record_batch.rs b/pyo3-arrow/src/record_batch.rs
index 8e86d49..d0f19d8 100644
--- a/pyo3-arrow/src/record_batch.rs
+++ b/pyo3-arrow/src/record_batch.rs
@@ -173,7 +173,6 @@ impl PyRecordBatch {
         }
     }
 
-    #[allow(unused_variables)]
     #[pyo3(signature = (requested_schema=None))]
     fn __arrow_c_array__<'py>(
         &'py self,
diff --git a/pyo3-arrow/src/record_batch_reader.rs b/pyo3-arrow/src/record_batch_reader.rs
index 7012d43..1963889 100644
--- a/pyo3-arrow/src/record_batch_reader.rs
+++ b/pyo3-arrow/src/record_batch_reader.rs
@@ -153,7 +153,6 @@ impl PyRecordBatchReader {
         to_schema_pycapsule(py, self.schema_ref()?.as_ref())
     }
 
-    #[allow(unused_variables)]
     #[pyo3(signature = (requested_schema=None))]
     fn __arrow_c_stream__<'py>(
         &'py mut self,
diff --git a/pyo3-arrow/src/scalar.rs b/pyo3-arrow/src/scalar.rs
index 79464ca..c81b4cb 100644
--- a/pyo3-arrow/src/scalar.rs
+++ b/pyo3-arrow/src/scalar.rs
@@ -126,7 +126,6 @@ impl PyScalar {
         Self::try_new(array, field)
     }
 
-    #[allow(unused_variables)]
     #[pyo3(signature = (requested_schema=None))]
     fn __arrow_c_array__<'py>(
         &'py self,
diff --git a/pyo3-arrow/src/table.rs b/pyo3-arrow/src/table.rs
index eeb103f..fbabf7e 100644
--- a/pyo3-arrow/src/table.rs
+++ b/pyo3-arrow/src/table.rs
@@ -229,7 +229,6 @@ impl PyTable {
         to_schema_pycapsule(py, self.schema.as_ref())
     }
 
-    #[allow(unused_variables)]
     #[pyo3(signature = (requested_schema=None))]
     fn __arrow_c_stream__<'py>(
         &'py self,