diff --git a/build.sbt b/build.sbt
index 237d6a5..42b3315 100644
--- a/build.sbt
+++ b/build.sbt
@@ -3,8 +3,8 @@ ThisBuild / scalaVersion := "3.3.8"
 
 val fs2DataVersion = "1.8.1"
 val http4sVersion = "0.23.36"
-val latisVersion  = "b66ec47"
-val latisHapiVersion = "1a507d1"
+val latisVersion  = "c1531e77"
+val latisHapiVersion = "1d65ba50"
 
 lazy val root = (project in file("."))
   .settings(
diff --git a/src/main/scala/latis/ops/ConvertHapiTypes.scala b/src/main/scala/latis/ops/ConvertHapiTypes.scala
index e0cf68d..b11a320 100644
--- a/src/main/scala/latis/ops/ConvertHapiTypes.scala
+++ b/src/main/scala/latis/ops/ConvertHapiTypes.scala
@@ -27,6 +27,7 @@ class ConvertHapiTypes extends MapOperation {
 
   private def convertValue(data: Data): Data = data match {
     case v: ShortValue => IntValue(v.value.toInt)
+    case v: LongValue  => IntValue(v.value.toInt) //risk of overflow but no exception
     case v: FloatValue => DoubleValue(v.value.toDouble)
     case _             => data //no-op, shouldn't get here due to catalog filter
   }
@@ -45,6 +46,10 @@ class ConvertHapiTypes extends MapOperation {
       Scalar.fromMetadata(
         scalar.metadata + ("type" -> "int")
       ).fold(throw _, identity) //should not fail
+    case LongValueType =>
+      Scalar.fromMetadata(
+        scalar.metadata + ("type" -> "int")
+      ).fold(throw _, identity) //should not fail
     case _ => scalar //no-op, shouldn't get here due to catalog filter
   }
 }
diff --git a/src/main/scala/latis/service/hapi/HapiService.scala b/src/main/scala/latis/service/hapi/HapiService.scala
index 8a93310..e5fced1 100644
--- a/src/main/scala/latis/service/hapi/HapiService.scala
+++ b/src/main/scala/latis/service/hapi/HapiService.scala
@@ -42,7 +42,7 @@ class HapiService(catalog: Catalog) extends ServiceInterface(catalog, OperationR
   // This checks that:
   // - The Dataset metadata has temporalCoverage
   // - The single domain variable is of type Time
-  // - Each scalar in the range has a supported type
+  // - Each scalar in the range has a supported or convertible type
   // - If the type of a scalar is string, its size is defined
   private val filteredCatalog: Catalog = {
     val covP:  Metadata => Boolean = _.getProperty("temporalCoverage").isDefined
@@ -50,8 +50,9 @@ class HapiService(catalog: Catalog) extends ServiceInterface(catalog, OperationR
       case "string" => md.getProperty("size").isDefined
       case "double" => true
       case "int"    => true
-      case "float"  => true //may be converted to double by ConvertHapiTypes
-      case "short"  => true //may be converted to int by ConvertHapiTypes
+      case "long"   => true //converted to int by ConvertHapiTypes
+      case "float"  => true //converted to double by ConvertHapiTypes
+      case "short"  => true //converted to int by ConvertHapiTypes
       case _        => false
     }