diff --git a/spark/build.gradle.kts b/spark/build.gradle.kts
index 41837b386..f4d5c84e1 100644
--- a/spark/build.gradle.kts
+++ b/spark/build.gradle.kts
@@ -102,7 +102,9 @@ java {
   withSourcesJar()
 }
 
-tasks.withType<ScalaCompile>() { scalaCompileOptions.additionalParameters = listOf("-release:17") }
+tasks.withType<ScalaCompile>() {
+  scalaCompileOptions.additionalParameters = listOf("-release:17", "-Xfatal-warnings")
+}
 
 var SPARKBUNDLE_VERSION = properties.get("sparkbundle.version")
 
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 aaf08ba07..1f3c4e97c 100644
--- a/spark/src/main/scala/io/substrait/spark/logical/ToLogicalPlan.scala
+++ b/spark/src/main/scala/io/substrait/spark/logical/ToLogicalPlan.scala
@@ -50,6 +50,7 @@ import io.substrait.relation.files.FileFormat
 import io.substrait.util.EmptyVisitationContext
 import org.apache.hadoop.fs.Path
 
+import scala.annotation.nowarn
 import scala.collection.JavaConverters.asScalaBufferConverter
 import scala.collection.mutable.ArrayBuffer
 
@@ -180,6 +181,7 @@ class ToLogicalPlan(spark: SparkSession = SparkSession.builder().getOrCreate())
     }
   }
 
+  @nowarn("cat=deprecation")
   override def visit(join: relation.Join, context: EmptyVisitationContext): LogicalPlan = {
     val left = join.getLeft.accept(this, context)
     val right = join.getRight.accept(this, context)