diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index ebd172f..2b6e092 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        ruby: ["2.7", "3.0", "3.1", "3.2"]
+        ruby: ["2.7", "3.0", "3.1", "3.2", "3.3"]
 
     steps:
       - uses: actions/checkout@master
@@ -37,7 +37,7 @@ jobs:
       - name: Set up Ruby
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: 3.2
+          ruby-version: 3.3
           bundler: default
           bundler-cache: true
       - name: Build docs
diff --git a/Gemfile.lock b/Gemfile.lock
index aa39dfc..8fd407a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -3,7 +3,7 @@ PATH
   specs:
     weaviate-ruby (0.9.0)
       faraday (>= 2.0.1, < 3.0)
-      graphlient (~> 0.7.0)
+      graphlient (>= 0.7.0, < 0.9.0)
 
 GEM
   remote: https://rubygems.org/
diff --git a/README.md b/README.md
index c7043e3..4307efe 100644
--- a/README.md
+++ b/README.md
@@ -144,7 +144,7 @@ client.schema.create(
 ### Using the Objects endpoint
 ```ruby
 # Create a new data object. 
-client.objects.create(
+output = client.objects.create(
     class_name: 'Question',
     properties: {
         answer: '42',
@@ -152,6 +152,7 @@ client.objects.create(
         category: 'philosophy'
     }
 )
+uuid = output["id"]
 
 # Lists all data objects in reverse order of creation.
 client.objects.list()
@@ -159,19 +160,19 @@ client.objects.list()
 # Get a single data object.
 client.objects.get(
     class_name: "Question",
-    id: "uuid"
+    id: uuid
 )
 
 # Check if a data object exists.
 client.objects.exists?(
     class_name: "Question",
-    id: "uuid"
+    id: uuid
 )
 
 # Perform a partial update on an object based on its uuid.
 client.objects.update(
     class_name: "Question",
-    id: "uuid",
+    id: uuid,
     properties: {
         category: "simple-math"
     }
@@ -180,7 +181,7 @@ client.objects.update(
 # Replace an object based on its uuid.
 client.objects.replace(
     class_name: "Question",
-    id: "uuid",
+    id: uuid,
     properties: {
         question: "What does 6 times 7 equal to?",
         category: "math",
@@ -191,34 +192,35 @@ client.objects.replace(
 # Delete a single data object from Weaviate.
 client.objects.delete(
     class_name: "Question",
-    id: "uuid"
+    id: uuid
 )
 
 # Batch create objects
-client.objects.batch_create(objects: [
+output = client.objects.batch_create(objects: [
     {
         class: "Question",
         properties: {
-        answer: "42",
-        question: "What is the meaning of life?",
-        category: "philosophy"
+            answer: "42",
+            question: "What is the meaning of life?",
+            category: "philosophy"
         }
     }, {
         class: "Question",
         properties: {
-        answer: "42",
-        question: "What does 6 times 7 equal to?",
-        category: "math"
+            answer: "42",
+            question: "What does 6 times 7 equal to?",
+            category: "math"
         }
     }
 ])
+uuids = output.pluck("id")
 
 # Batch delete objects
 client.objects.batch_delete(
     class_name: "Question",
     where: {
-        valueString: "uuid",
-        operator: "Equal",
+        valueStringArray: uuids,
+        operator: "ContainsAny",
         path: ["id"]
     }
 )
diff --git a/weaviate.gemspec b/weaviate.gemspec
index c0a34cf..412bdc7 100644
--- a/weaviate.gemspec
+++ b/weaviate.gemspec
@@ -36,7 +36,7 @@ Gem::Specification.new do |spec|
   # guide at: https://bundler.io/guides/creating_gem.html
 
   spec.add_dependency "faraday", ">= 2.0.1", "< 3.0"
-  spec.add_dependency "graphlient", "~> 0.7.0"
+  spec.add_dependency "graphlient", ">= 0.7.0", "< 0.9.0"
   spec.add_development_dependency "pry-byebug", "~> 3.9"
   spec.add_development_dependency "yard"
   spec.add_development_dependency "rdiscount" # for github-flavored markdown in yard