diff --git a/core/src/main/scala/cats/data/NonEmptyMapImpl.scala b/core/src/main/scala/cats/data/NonEmptyMapImpl.scala
index 052ccc2a51..9b8cebd01a 100644
--- a/core/src/main/scala/cats/data/NonEmptyMapImpl.scala
+++ b/core/src/main/scala/cats/data/NonEmptyMapImpl.scala
@@ -70,7 +70,7 @@ object NonEmptyMapImpl extends NonEmptyMapInstances with Newtype2 {
 
 }
 
-sealed class NonEmptyMapOps[K, A](val value: NonEmptyMap[K, A]) {
+sealed class NonEmptyMapOps[K, A](private[data] val value: NonEmptyMap[K, A]) {
 
   /**
    * Converts this map to a `SortedMap`.
diff --git a/core/src/main/scala/cats/data/NonEmptySet.scala b/core/src/main/scala/cats/data/NonEmptySet.scala
index ad5e5b3dc2..f9b7dd78a4 100644
--- a/core/src/main/scala/cats/data/NonEmptySet.scala
+++ b/core/src/main/scala/cats/data/NonEmptySet.scala
@@ -62,7 +62,7 @@ object NonEmptySetImpl extends NonEmptySetInstances with Newtype {
 }
 
 @suppressUnusedImportWarningForScalaVersionSpecific
-sealed class NonEmptySetOps[A](val value: NonEmptySet[A]) {
+sealed class NonEmptySetOps[A](private[data] val value: NonEmptySet[A]) {
 
   implicit private val ordering: Ordering[A] = toSortedSet.ordering
   implicit private val order: Order[A] = Order.fromOrdering