diff --git a/.github/workflows/test-and-release.yml b/.github/workflows/test-and-release.yml
index 36818c9..ab8497b 100644
--- a/.github/workflows/test-and-release.yml
+++ b/.github/workflows/test-and-release.yml
@@ -33,10 +33,10 @@ jobs:
           - os: windows-latest
             platform: x64-mingw-ucrt
             ruby: '3.4'
-          # Future: Windows ARM64 support (commented out due to OpenSSL build system incompatibility)
-          # - os: windows-11-arm
-          #   platform: arm64-mingw-ucrt
-          #   ruby: '3.4'
+          # Windows ARM64 support (now enabled with OpenSSL 3.3.2)
+          - os: windows-11-arm
+            platform: arm64-mingw-ucrt
+            ruby: '3.4'
           # macOS platforms
           - os: macos-latest
             platform: x86_64-darwin
@@ -154,9 +154,9 @@ jobs:
           - os: windows-2025
             platform: x64-mingw32
           # Windows ARM64 platform
-          # - os: windows-11-arm
-          #   platform: arm64-mingw-ucrt
-          #   ruby: '3.4'
+          - os: windows-11-arm
+            platform: arm64-mingw-ucrt
+            ruby: '3.4'
           # macOS platforms
           - os: macos-15
             platform: arm64-darwin
diff --git a/ext/configuration.yml b/ext/configuration.yml
index c442961..4cdc424 100644
--- a/ext/configuration.yml
+++ b/ext/configuration.yml
@@ -1,4 +1,9 @@
 libraries:
+  # Windows ARM64 support is enabled via platform-specific configurations below:
+  # - OpenSSL uses version 3.3.2 for Windows ARM64 (required for ARM64 compatibility)
+  # - OpenSSL uses version 1.1.1w for Windows x64 (more stable for x86_64)
+  # - xz uses version 5.2.4 for all Windows platforms (MinGW compatibility)
+  # - Other libraries use cross-platform versions under 'all'
   zlib:
     all:
       version: "1.3.1"