diff --git a/.github/workflows/build-workflow.yml b/.github/workflows/build-workflow.yml
index 8d9106d8..5235ce1d 100644
--- a/.github/workflows/build-workflow.yml
+++ b/.github/workflows/build-workflow.yml
@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        ruby: ['2.6', '2.7', '3.0', '3.1', 'head']
+        ruby: ['2.6', '2.7', '3.0', '3.1', '3.2', '3.3', 'head']
     steps:
       - uses: actions/checkout@v4
       - uses: awalsh128/cache-apt-pkgs-action@v1
@@ -39,7 +39,7 @@ jobs:
     runs-on: macos-latest
     strategy:
       matrix:
-        ruby: ['2.6', '2.7', '3.0', '3.1', 'head']
+        ruby: ['2.6', '2.7', '3.0', '3.1', '3.2', '3.3', 'head']
     steps:
       - uses: actions/checkout@v4
       - run: brew install glfw
@@ -56,7 +56,7 @@ jobs:
       MITTSU_LIBGLFW_PATH: c:\projects\mittsu\glfw-3.3.1.bin.WIN32\lib-mingw
     strategy:
       matrix:
-        ruby: ['2.6', '2.7', '3.0', '3.1', 'head']
+        ruby: ['2.6', '2.7', '3.0', '3.1', '3.2', '3.3', 'head']
     steps:
       - uses: actions/checkout@v4
       - run: .\install-glfw.ps1