diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index f59cc18..9833c47 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -24,6 +24,7 @@ jobs:
           - windows-latest
           - macos-13
         ruby:
+          - '3.3'
           - '3.2'
           - '3.1'
           - '3.0'
@@ -63,6 +64,18 @@ jobs:
           - ruby: '3.2'
             gemfile: openssl_2_1
             os: windows-latest
+          - ruby: '3.3'
+            gemfile: openssl_2_2
+            os: macos-13
+          - ruby: '3.3'
+            gemfile: openssl_2_1
+            os: macos-13
+          - ruby: '3.3'
+            gemfile: openssl_2_2
+            os: windows-latest
+          - ruby: '3.3'
+            gemfile: openssl_2_1
+            os: windows-latest
     env:
       BUNDLE_GEMFILE: gemfiles/${{ matrix.gemfile }}.gemfile
     steps: