diff --git a/parquet/src/main/scala/magnolify/parquet/MagnolifyParquetProperties.scala b/parquet/src/main/scala/magnolify/parquet/MagnolifyParquetProperties.scala
index e3c1824e..7f576816 100644
--- a/parquet/src/main/scala/magnolify/parquet/MagnolifyParquetProperties.scala
+++ b/parquet/src/main/scala/magnolify/parquet/MagnolifyParquetProperties.scala
@@ -18,8 +18,10 @@ package magnolify.parquet
 
 import org.apache.hadoop.conf.Configuration
 
-import java.util.Objects
-
+/**
+ * Properties for reading and writing Magnolify ParquetType classes,
+ * configurable via a Hadoop [[Configuration]] instance.
+ */
 object MagnolifyParquetProperties {
   val WriteGroupedArrays: String = "magnolify.parquet.write-grouped-arrays"
   val WriteGroupedArraysDefault: Boolean = false
@@ -32,8 +34,6 @@ object MagnolifyParquetProperties {
 
   // Hash any Configuration values that might affect schema creation to use as part of Schema cache key
   private[parquet] def hashValues(conf: Configuration): Int = {
-    Objects.hash(
-      Option(conf.get(WriteGroupedArrays)).map(_.toBoolean).getOrElse(WriteGroupedArraysDefault)
-    )
+    Option(conf.get(WriteGroupedArrays)).map(_.toBoolean).getOrElse(WriteGroupedArraysDefault).hashCode()
   }
 }
diff --git a/parquet/src/main/scala/magnolify/parquet/ParquetField.scala b/parquet/src/main/scala/magnolify/parquet/ParquetField.scala
index e9585bd8..670b21ac 100644
--- a/parquet/src/main/scala/magnolify/parquet/ParquetField.scala
+++ b/parquet/src/main/scala/magnolify/parquet/ParquetField.scala
@@ -29,9 +29,9 @@ import org.apache.parquet.io.api._
 import org.apache.parquet.schema.PrimitiveType.PrimitiveTypeName
 import org.apache.parquet.schema.Type.Repetition
 import org.apache.parquet.schema.{LogicalTypeAnnotation, Type, Types}
-import org.typelevel.scalaccompat.annotation.nowarn
 
-import scala.annotation.implicitNotFound
+import scala.annotation.{implicitNotFound, nowarn}
+import scala.collection.compat._
 import scala.collection.concurrent
 
 sealed trait ParquetField[T] extends Serializable {