diff --git a/codegen/smithy-ruby-codegen/src/main/java/software/amazon/smithy/ruby/codegen/ApplicationTransport.java b/codegen/smithy-ruby-codegen/src/main/java/software/amazon/smithy/ruby/codegen/ApplicationTransport.java
index 7a4898409..e496c6bb4 100644
--- a/codegen/smithy-ruby-codegen/src/main/java/software/amazon/smithy/ruby/codegen/ApplicationTransport.java
+++ b/codegen/smithy-ruby-codegen/src/main/java/software/amazon/smithy/ruby/codegen/ApplicationTransport.java
@@ -123,7 +123,7 @@ public static ApplicationTransport createDefaultHttpApplicationTransport() {
 
             middleware.add(new Middleware.Builder()
                     .klass("Hearth::Middleware::Build")
-                    .step(MiddlewareStackStep.SERIALIZE)
+                    .step(MiddlewareStackStep.BUILD)
                     .operationParams((ctx, operation) -> {
                         Map<String, String> params = new HashMap<>();
                         params.put("builder",
@@ -140,13 +140,13 @@ public static ApplicationTransport createDefaultHttpApplicationTransport() {
                                     !Streaming.isNonFiniteStreaming(
                                             model, model.expectShape(operation.getInputShape(), StructureShape.class))
                     )
-                    .step(MiddlewareStackStep.BUILD)
+                    .step(MiddlewareStackStep.AFTER_BUILD)
                     .build()
             );
 
             middleware.add((new Middleware.Builder())
                     .klass("Hearth::HTTP::Middleware::ContentMD5")
-                    .step(MiddlewareStackStep.BUILD)
+                    .step(MiddlewareStackStep.AFTER_BUILD)
                     .operationPredicate(
                             (model, service, operation) -> operation.hasTrait(HttpChecksumRequiredTrait.class))
                     .build()
@@ -154,7 +154,7 @@ public static ApplicationTransport createDefaultHttpApplicationTransport() {
 
             middleware.add((new Middleware.Builder())
                     .klass("Hearth::Middleware::Parse")
-                    .step(MiddlewareStackStep.DESERIALIZE)
+                    .step(MiddlewareStackStep.PARSE)
                     .operationParams((ctx, operation) -> {
                         Map<String, String> params = new HashMap<>();
                         params.put("data_parser",
diff --git a/codegen/smithy-ruby-codegen/src/main/java/software/amazon/smithy/ruby/codegen/middleware/MiddlewareStackStep.java b/codegen/smithy-ruby-codegen/src/main/java/software/amazon/smithy/ruby/codegen/middleware/MiddlewareStackStep.java
index 9e63c24c1..25aec55a0 100644
--- a/codegen/smithy-ruby-codegen/src/main/java/software/amazon/smithy/ruby/codegen/middleware/MiddlewareStackStep.java
+++ b/codegen/smithy-ruby-codegen/src/main/java/software/amazon/smithy/ruby/codegen/middleware/MiddlewareStackStep.java
@@ -26,11 +26,11 @@
 @SmithyUnstableApi
 public enum MiddlewareStackStep {
     INITIALIZE,
-    SERIALIZE,
     BUILD,
+    AFTER_BUILD,
     RETRY,
     FINALIZE,
-    DESERIALIZE,
+    PARSE,
     SEND;
 
     @Override
@@ -40,12 +40,12 @@ public String toString() {
                 return "Initialize";
             case RETRY:
                 return "Retry";
-            case SERIALIZE:
-                return "Serialize";
             case BUILD:
                 return "Build";
-            case DESERIALIZE:
-                return "Deserialize";
+            case AFTER_BUILD:
+                return "AfterBuild";
+            case PARSE:
+                return "Parse";
             case FINALIZE:
                 return "Finalize";
             case SEND:
diff --git a/codegen/smithy-ruby-rails-codegen/src/main/java/software/amazon/smithy/ruby/codegen/integrations/RailsIntegration.java b/codegen/smithy-ruby-rails-codegen/src/main/java/software/amazon/smithy/ruby/codegen/integrations/RailsIntegration.java
index 4a5d0fdf2..75d994e8b 100644
--- a/codegen/smithy-ruby-rails-codegen/src/main/java/software/amazon/smithy/ruby/codegen/integrations/RailsIntegration.java
+++ b/codegen/smithy-ruby-rails-codegen/src/main/java/software/amazon/smithy/ruby/codegen/integrations/RailsIntegration.java
@@ -39,7 +39,7 @@ public List<ProtocolGenerator> getProtocolGenerators() {
     public void modifyClientMiddleware(MiddlewareBuilder middlewareBuilder, GenerationContext context) {
         Middleware requestId = (new Middleware.Builder())
                 .klass("Middleware::RequestId")
-                .step(MiddlewareStackStep.DESERIALIZE)
+                .step(MiddlewareStackStep.PARSE)
                 .rubySource("smithy-ruby-rails-codegen/middleware/request_id.rb")
                 .build();
         middlewareBuilder.register(requestId);