diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 846ee44a..c23038f1 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -1,11 +1,11 @@
 name: Run CI
 on:
   push:
-    branches: [ main ]
+    branches: [ main, 'feat/**' ]
     paths-ignore:
       - '**.md' # Do not need to run CI for markdown changes.
   pull_request:
-    branches: [ main ]
+    branches: [ main, 'feat/**' ]
     paths-ignore:
       - '**.md'
 
diff --git a/contract-tests/client_entity.rb b/contract-tests/client_entity.rb
index dc932691..faab8c9d 100644
--- a/contract-tests/client_entity.rb
+++ b/contract-tests/client_entity.rb
@@ -65,7 +65,7 @@ def initialize(log, config)
 
     if config[:hooks]
       opts[:hooks] = config[:hooks][:hooks].map do |hook|
-        Hook.new(hook[:name], hook[:callbackUri], hook[:data] || {})
+        Hook.new(hook[:name], hook[:callbackUri], hook[:data] || {}, hook[:errors] || {})
       end
     end
 
diff --git a/contract-tests/hook.rb b/contract-tests/hook.rb
index 89690ce9..0c9eb221 100644
--- a/contract-tests/hook.rb
+++ b/contract-tests/hook.rb
@@ -7,11 +7,13 @@ class Hook
   # @param name [String]
   # @param callback_uri [String]
   # @param data [Hash]
+  # @parm errors [Hash]
   #
-  def initialize(name, callback_uri, data)
+  def initialize(name, callback_uri, data, errors)
     @metadata = LaunchDarkly::Interfaces::Hooks::Metadata.new(name)
     @callback_uri = callback_uri
     @data = data
+    @errors = errors
     @context_filter = LaunchDarkly::Impl::ContextFilter.new(false, [])
   end
 
@@ -24,6 +26,8 @@ def metadata
   # @param data [Hash]
   #
   def before_evaluation(evaluation_series_context, data)
+    raise @errors[:beforeEvaluation] if @errors.include? :beforeEvaluation
+
     payload = {
       evaluationSeriesContext: {
         flagKey: evaluation_series_context.key,
@@ -46,6 +50,8 @@ def before_evaluation(evaluation_series_context, data)
   # @param detail [LaunchDarkly::EvaluationDetail]
   #
   def after_evaluation(evaluation_series_context, data, detail)
+    raise @errors[:afterEvaluation] if @errors.include? :afterEvaluation
+
     payload = {
       evaluationSeriesContext: {
         flagKey: evaluation_series_context.key,