diff --git a/core/src/main/java/io/substrait/relation/Join.java b/core/src/main/java/io/substrait/relation/Join.java
index 875d6d50b..e33e33d3e 100644
--- a/core/src/main/java/io/substrait/relation/Join.java
+++ b/core/src/main/java/io/substrait/relation/Join.java
@@ -63,14 +63,7 @@ public enum JoinType {
     /**
      * Right mark join: right rows with an appended boolean column marking whether a match exists.
      */
-    RIGHT_MARK(JoinRel.JoinType.JOIN_TYPE_RIGHT_MARK),
-    // deprecated values last to not get them looked up first in fromProto()
-    /** use {@link #LEFT_SEMI} instead */
-    @Deprecated
-    SEMI(JoinRel.JoinType.JOIN_TYPE_LEFT_SEMI),
-    /** use {@link #LEFT_ANTI} instead */
-    @Deprecated
-    ANTI(JoinRel.JoinType.JOIN_TYPE_LEFT_ANTI);
+    RIGHT_MARK(JoinRel.JoinType.JOIN_TYPE_RIGHT_MARK);
 
     private JoinRel.JoinType proto;
 
@@ -135,8 +128,6 @@ private Stream<Type> getRightTypes() {
       case OUTER:
       case LEFT_SINGLE:
         return getRight().getRecordType().fields().stream().map(TypeCreator::asNullable);
-      case SEMI:
-      case ANTI:
       case LEFT_SEMI:
       case LEFT_ANTI:
       case LEFT_MARK:
diff --git a/isthmus/src/main/java/io/substrait/isthmus/SubstraitRelNodeConverter.java b/isthmus/src/main/java/io/substrait/isthmus/SubstraitRelNodeConverter.java
index 0aef61857..1800c5424 100644
--- a/isthmus/src/main/java/io/substrait/isthmus/SubstraitRelNodeConverter.java
+++ b/isthmus/src/main/java/io/substrait/isthmus/SubstraitRelNodeConverter.java
@@ -259,12 +259,6 @@ private JoinRelType asJoinRelType(Join join) {
     if (type == JoinType.OUTER) {
       return JoinRelType.FULL;
     }
-    if (type == JoinType.SEMI) {
-      return JoinRelType.SEMI;
-    }
-    if (type == JoinType.ANTI) {
-      return JoinRelType.ANTI;
-    }
     if (type == JoinType.LEFT_SEMI) {
       return JoinRelType.SEMI;
     }
diff --git a/spark/src/main/scala/io/substrait/spark/logical/ToLogicalPlan.scala b/spark/src/main/scala/io/substrait/spark/logical/ToLogicalPlan.scala
index d2abf13c5..35c8badab 100644
--- a/spark/src/main/scala/io/substrait/spark/logical/ToLogicalPlan.scala
+++ b/spark/src/main/scala/io/substrait/spark/logical/ToLogicalPlan.scala
@@ -219,8 +219,6 @@ class ToLogicalPlan(val spark: AnyRef = SparkCompat.instance.getOrCreateSparkSes
         case relation.Join.JoinType.LEFT => LeftOuter
         case relation.Join.JoinType.RIGHT => RightOuter
         case relation.Join.JoinType.OUTER => FullOuter
-        case relation.Join.JoinType.SEMI => LeftSemi
-        case relation.Join.JoinType.ANTI => LeftAnti
         case relation.Join.JoinType.LEFT_SEMI => LeftSemi
         case relation.Join.JoinType.LEFT_ANTI => LeftAnti
         case relation.Join.JoinType.UNKNOWN =>