diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index b21adeb..923c868 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -22,4 +22,6 @@ jobs:
       with:
         ruby-version: ${{ matrix.ruby }}
         bundler-cache: true
-    - run: bundle exec rake
+    - run: |
+        gem update --system 3.2.3
+        bundle exec rake
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6e62e27..bc3a7d5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,10 @@
 ## Unreleased
 
+## 1.1.0 (2023-10-15)
+### Added
+* Support for uniqueItems in array #154
+* Fix nullable field does not work with allOf, anyOf and oneOf keyword #128
+
 ## 1.0.0 (2021-02-03)
 ### Added
 * Add date-time format validation #126
diff --git a/lib/openapi_parser/version.rb b/lib/openapi_parser/version.rb
index e28bea2..203dacf 100644
--- a/lib/openapi_parser/version.rb
+++ b/lib/openapi_parser/version.rb
@@ -1,3 +1,3 @@
 module OpenAPIParser
-  VERSION = '1.0.0'.freeze
+  VERSION = '1.1.0'.freeze
 end