diff --git a/dev/diffs/iceberg/1.8.1.diff b/dev/diffs/iceberg/1.8.1.diff
index fe289bd2d7..dffd820ff9 100644
--- a/dev/diffs/iceberg/1.8.1.diff
+++ b/dev/diffs/iceberg/1.8.1.diff
@@ -17,7 +17,7 @@ index 7327b38905d..7967109f039 100644
        exclude group: 'org.apache.avro', module: 'avro'
        // already shaded by Parquet
 diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
-index 04ffa8f4edc..cc0099ccc93 100644
+index 04ffa8f4edc..a909cd552c1 100644
 --- a/gradle/libs.versions.toml
 +++ b/gradle/libs.versions.toml
 @@ -34,6 +34,7 @@ azuresdk-bom = "1.2.31"
@@ -300,10 +300,10 @@ index 00000000000..ddf6c7de5ae
 +}
 diff --git a/parquet/src/main/java/org/apache/iceberg/parquet/CometVectorizedParquetReader.java b/parquet/src/main/java/org/apache/iceberg/parquet/CometVectorizedParquetReader.java
 new file mode 100644
-index 00000000000..88b195b76a2
+index 00000000000..a3cba401827
 --- /dev/null
 +++ b/parquet/src/main/java/org/apache/iceberg/parquet/CometVectorizedParquetReader.java
-@@ -0,0 +1,255 @@
+@@ -0,0 +1,260 @@
 +/*
 + * Licensed to the Apache Software Foundation (ASF) under one
 + * or more contributor license agreements.  See the NOTICE file
@@ -446,6 +446,7 @@ index 00000000000..88b195b76a2
 +    private long valuesRead = 0;
 +    private T last = null;
 +    private final FileReader cometReader;
++    private ReadConf conf;
 +
 +    FileIterator(
 +        ReadConf conf,
@@ -470,6 +471,7 @@ index 00000000000..88b195b76a2
 +              length,
 +              fileEncryptionKey,
 +              fileAADPrefix);
++      this.conf = conf;
 +    }
 +
 +    private FileReader newCometReader(
@@ -556,6 +558,9 @@ index 00000000000..88b195b76a2
 +    public void close() throws IOException {
 +      model.close();
 +      cometReader.close();
++      if (conf != null && conf.reader() != null) {
++        conf.reader().close();
++      }
 +    }
 +  }
 +}
diff --git a/dev/diffs/iceberg/1.9.1.diff b/dev/diffs/iceberg/1.9.1.diff
index e7b143981c..52e499874b 100644
--- a/dev/diffs/iceberg/1.9.1.diff
+++ b/dev/diffs/iceberg/1.9.1.diff
@@ -291,10 +291,10 @@ index 00000000000..ddf6c7de5ae
 +}
 diff --git a/parquet/src/main/java/org/apache/iceberg/parquet/CometVectorizedParquetReader.java b/parquet/src/main/java/org/apache/iceberg/parquet/CometVectorizedParquetReader.java
 new file mode 100644
-index 00000000000..88b195b76a2
+index 00000000000..a3cba401827
 --- /dev/null
 +++ b/parquet/src/main/java/org/apache/iceberg/parquet/CometVectorizedParquetReader.java
-@@ -0,0 +1,255 @@
+@@ -0,0 +1,260 @@
 +/*
 + * Licensed to the Apache Software Foundation (ASF) under one
 + * or more contributor license agreements.  See the NOTICE file
@@ -437,6 +437,7 @@ index 00000000000..88b195b76a2
 +    private long valuesRead = 0;
 +    private T last = null;
 +    private final FileReader cometReader;
++    private ReadConf conf;
 +
 +    FileIterator(
 +        ReadConf conf,
@@ -461,6 +462,7 @@ index 00000000000..88b195b76a2
 +              length,
 +              fileEncryptionKey,
 +              fileAADPrefix);
++      this.conf = conf;
 +    }
 +
 +    private FileReader newCometReader(
@@ -547,6 +549,9 @@ index 00000000000..88b195b76a2
 +    public void close() throws IOException {
 +      model.close();
 +      cometReader.close();
++      if (conf != null && conf.reader() != null) {
++        conf.reader().close();
++      }
 +    }
 +  }
 +}