diff --git a/pom.xml b/pom.xml
index 127f24cd6..0d94d0870 100644
--- a/pom.xml
+++ b/pom.xml
@@ -18,7 +18,7 @@
         <artifact.scala.version>${scala.major.version}</artifact.scala.version>
         <scala-maven-plugin.version>4.4.0</scala-maven-plugin.version>
 
-        <spark.version>3.2.0</spark.version>
+        <spark.version>3.2.1</spark.version>
     </properties>
 
     <name>deequ</name>
@@ -74,6 +74,14 @@
             <version>${scala.version}</version>
         </dependency>
 
+        <!-- https://mvnrepository.com/artifact/org.scala-lang/scala-reflect -->
+        <dependency>
+            <groupId>org.scala-lang</groupId>
+            <artifactId>scala-reflect</artifactId>
+            <version>${scala.version}</version>
+        </dependency>
+
+
         <dependency>
             <groupId>org.apache.spark</groupId>
             <artifactId>spark-core_${scala.major.version}</artifactId>
diff --git a/src/main/scala/com/amazon/deequ/analyzers/catalyst/StatefulApproxQuantile.scala b/src/main/scala/com/amazon/deequ/analyzers/catalyst/StatefulApproxQuantile.scala
index 32388f01a..cd5a3a43b 100644
--- a/src/main/scala/com/amazon/deequ/analyzers/catalyst/StatefulApproxQuantile.scala
+++ b/src/main/scala/com/amazon/deequ/analyzers/catalyst/StatefulApproxQuantile.scala
@@ -1,19 +1,18 @@
 /**
- * Copyright 2018 Amazon.com, Inc. or its affiliates. All Rights Reserved.
- *
- * Licensed under the Apache License, Version 2.0 (the "License"). You may not
- * use this file except in compliance with the License. A copy of the License
- * is located at
- *
- *     http://aws.amazon.com/apache2.0/
- *
- * or in the "license" file accompanying this file. This file is distributed on
- * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
- * express or implied. See the License for the specific language governing
- * permissions and limitations under the License.
- *
- */
-
+  * Copyright 2018 Amazon.com, Inc. or its affiliates. All Rights Reserved.
+  *
+  * Licensed under the Apache License, Version 2.0 (the "License"). You may not
+  * use this file except in compliance with the License. A copy of the License
+  * is located at
+  *
+  * http://aws.amazon.com/apache2.0/
+  *
+  * or in the "license" file accompanying this file. This file is distributed on
+  * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
+  * express or implied. See the License for the specific language governing
+  * permissions and limitations under the License.
+  *
+  */
 package org.apache.spark.sql.catalyst.expressions.aggregate
 
 import org.apache.spark.sql.catalyst.InternalRow
@@ -26,12 +25,13 @@ import org.apache.spark.sql.types._
 
 /** Adjusted version of org.apache.spark.sql.catalyst.expressions.aggregate.ApproximatePercentile
   * (github tag v2.2.0) */
-private[sql] case class StatefulApproxQuantile(
-    child: Expression,
-    accuracyExpression: Expression,
-    override val mutableAggBufferOffset: Int,
-    override val inputAggBufferOffset: Int)
-    extends TypedImperativeAggregate[PercentileDigest] with ImplicitCastInputTypes with BinaryLike[Expression] {
+private[sql] case class StatefulApproxQuantile(child: Expression,
+                                               accuracyExpression: Expression,
+                                               override val mutableAggBufferOffset: Int,
+                                               override val inputAggBufferOffset: Int)
+    extends TypedImperativeAggregate[PercentileDigest]
+    with ImplicitCastInputTypes
+    with BinaryLike[Expression] {
 
   def this(child: Expression, accuracyExpression: Expression) = {
     this(child, accuracyExpression, 0, 0)
@@ -111,11 +111,12 @@ private[sql] case class StatefulApproxQuantile(
   }
 
   override def left: Expression = child
+
   override def right: Expression = accuracyExpression
   // override def third: Expression = accuracyExpression
 
-  protected def withNewChildrenInternal(
-      newFirst: Expression, newSecond: Expression): StatefulApproxQuantile =
+  protected def withNewChildrenInternal(newFirst: Expression,
+                                        newSecond: Expression): StatefulApproxQuantile =
     copy(child = newFirst, accuracyExpression = newSecond)
 
   // protected def withNewChildrenInternal(
diff --git a/src/main/scala/com/amazon/deequ/analyzers/catalyst/StatefulCorrelation.scala b/src/main/scala/com/amazon/deequ/analyzers/catalyst/StatefulCorrelation.scala
index 5e6e82a34..cea644604 100644
--- a/src/main/scala/com/amazon/deequ/analyzers/catalyst/StatefulCorrelation.scala
+++ b/src/main/scala/com/amazon/deequ/analyzers/catalyst/StatefulCorrelation.scala
@@ -50,4 +50,8 @@ private[sql] class StatefulCorrelation(
     val state = Seq(super.hashCode(), evaluateExpression)
     state.map { _.hashCode() }.foldLeft(0) {(a, b) => 31 * a + b }
   }
+
+  override protected def withNewChildrenInternal(newLeft: Expression,
+                                                 newRight: Expression): StatefulCorrelation =
+    new StatefulCorrelation(newLeft, newRight, nullOnDivideByZero)
 }
diff --git a/src/test/scala/com/amazon/deequ/SparkContextSpec.scala b/src/test/scala/com/amazon/deequ/SparkContextSpec.scala
index 43e9cb588..007598d97 100644
--- a/src/test/scala/com/amazon/deequ/SparkContextSpec.scala
+++ b/src/test/scala/com/amazon/deequ/SparkContextSpec.scala
@@ -78,6 +78,7 @@ trait SparkContextSpec {
       .appName("test")
       .config("spark.ui.enabled", "false")
       .config("spark.sql.shuffle.partitions", 2.toString)
+      .config("spark.sql.adaptive.enabled", value = false)
       .getOrCreate()
     session.sparkContext.setCheckpointDir(System.getProperty("java.io.tmpdir"))
     session