diff --git a/gradle.properties b/gradle.properties
index 5dfb35bec..615f487a3 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -3,7 +3,7 @@ kotlin.code.style=official
 # config
 
 # codegen
-smithyVersion=1.47.0
+smithyVersion=1.49.0
 smithyGradleVersion=0.6.0
 
 # kotlin
diff --git a/smithy-swift-codegen/src/main/kotlin/software/amazon/smithy/swift/codegen/AuthSchemeResolverGenerator.kt b/smithy-swift-codegen/src/main/kotlin/software/amazon/smithy/swift/codegen/AuthSchemeResolverGenerator.kt
index 1ee2a1cb5..3b7f803ef 100644
--- a/smithy-swift-codegen/src/main/kotlin/software/amazon/smithy/swift/codegen/AuthSchemeResolverGenerator.kt
+++ b/smithy-swift-codegen/src/main/kotlin/software/amazon/smithy/swift/codegen/AuthSchemeResolverGenerator.kt
@@ -3,7 +3,6 @@ package software.amazon.smithy.swift.codegen
 import software.amazon.smithy.aws.traits.ServiceTrait
 import software.amazon.smithy.aws.traits.auth.SigV4Trait
 import software.amazon.smithy.aws.traits.auth.UnsignedPayloadTrait
-import software.amazon.smithy.codegen.core.CodegenException
 import software.amazon.smithy.codegen.core.Symbol
 import software.amazon.smithy.model.knowledge.ServiceIndex
 import software.amazon.smithy.model.shapes.OperationShape
@@ -285,7 +284,7 @@ fun Parameter.toSymbol(): Symbol {
     val swiftType = when (type) {
         ParameterType.STRING -> SwiftTypes.String
         ParameterType.BOOLEAN -> SwiftTypes.Bool
-        else -> throw CodegenException("Unsupported parameter type: $type")
+        ParameterType.STRING_ARRAY -> SwiftTypes.StringArray
     }
     var builder = Symbol.builder().name(swiftType.fullName)
     if (!isRequired) {
diff --git a/smithy-swift-codegen/src/main/kotlin/software/amazon/smithy/swift/codegen/SwiftTypes.kt b/smithy-swift-codegen/src/main/kotlin/software/amazon/smithy/swift/codegen/SwiftTypes.kt
index b4996f1d2..8b693882b 100644
--- a/smithy-swift-codegen/src/main/kotlin/software/amazon/smithy/swift/codegen/SwiftTypes.kt
+++ b/smithy-swift-codegen/src/main/kotlin/software/amazon/smithy/swift/codegen/SwiftTypes.kt
@@ -16,6 +16,8 @@ object SwiftTypes {
     val Double = builtInSymbol("Double")
     val Bool = builtInSymbol("Bool")
 
+    val StringArray = builtInSymbol("Array<Swift.String>")
+
     val List = builtInSymbol("List")
     val Set = builtInSymbol("Set")
     val Map = builtInSymbol("Map")
diff --git a/smithy-swift-codegen/src/main/kotlin/software/amazon/smithy/swift/codegen/endpoints/EndpointParamsGenerator.kt b/smithy-swift-codegen/src/main/kotlin/software/amazon/smithy/swift/codegen/endpoints/EndpointParamsGenerator.kt
index e22cef456..644188ca1 100644
--- a/smithy-swift-codegen/src/main/kotlin/software/amazon/smithy/swift/codegen/endpoints/EndpointParamsGenerator.kt
+++ b/smithy-swift-codegen/src/main/kotlin/software/amazon/smithy/swift/codegen/endpoints/EndpointParamsGenerator.kt
@@ -5,7 +5,6 @@
 
 package software.amazon.smithy.swift.codegen.endpoints
 
-import software.amazon.smithy.codegen.core.CodegenException
 import software.amazon.smithy.codegen.core.Symbol
 import software.amazon.smithy.rulesengine.language.EndpointRuleSet
 import software.amazon.smithy.rulesengine.language.syntax.parameters.Parameter
@@ -86,7 +85,7 @@ fun Parameter.toSymbol(): Symbol {
     val swiftType = when (type) {
         ParameterType.STRING -> SwiftTypes.String
         ParameterType.BOOLEAN -> SwiftTypes.Bool
-        else -> throw CodegenException("Unsupported parameter type: $type")
+        ParameterType.STRING_ARRAY -> SwiftTypes.StringArray
     }
     var builder = Symbol.builder().name(swiftType.fullName)
     if (!isRequired) {